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Before having a look at the best shoes for hammertoes let us get started by understanding something about hammertoes.
Table of ContentsCauses Of HammertoesImportance of Wearing Proper Shoes for HammertoesBest Shoes for Hammertoes Reviews:1. ASICS GEL-Tech Neo 4 – Best Walking Shoes for...
This is one of the more "technically superior" shots I've taken. I was following the methodology outlined in the book Understanding Exposure in which different parts of the sky are used to meter the light for the shot, locking on the exposure, and then recomposing the shot. I've been able to get amazing SOOC results by doing that, even in very low light situations. If you are new to the field, I would highly recommend the book. I have one more of these "technical" shots that I'll upload later.
Explored #158! Thanks everyone!
Understanding the origin of matter in the early universe requires unique accelerator facilities and SRF cavities like this one. #NatLabDay
Romans 12:18 states, “If it is possible, as far as it depends on you, live at peace with everyone.” Pacifists thrive on this verse. A closer look yields understanding that this verse is no mere statement; there are modifiers that point out that peace may be dependent on more than just your attitude. The true pacifist version would simply be the definitive "Live at peace with everyone, period." One reason Jesus came was to bring peace… but it is not the world’s kind of peace. Jesus brings peace that does not depend on circumstances, but on relationship. It doesn’t end there; the result of a meaningful relationship with Jesus is in how all the relationships in our lives are affected, including those of our enemies. True peace comes from having your sins forgiven and knowing that whatever comes your way God will never abandon you. That’s the ultimate relationship. Peace is but one principle by which all such relationships are maintained, yet the First Cause of Christianity speaks of so much more; thus is the manifold wisdom of God (Ephesians 3:10). On such issues, pacifists can be properly diagnosed of a severe loss of reality. They have to subvert God’s reality to fit their philosophy because there’s no other way it will work; but if you deliberately misinterpret God’s word to make the case for your beliefs, you’re also attempting to alter reality. You’re offering a perversion of reality… a reality of your choosing, when God’s version is what He’s left for us to work with. Regardless how “wonderful” the image of a pacifist’s reality may be, it will never overcome the reality through which God speaks, the very one He created. C. S. Lewis postulated that you have to have good philosophy if for no other reason than to answer bad philosophy. Throughout history, there have been situations so bad that the only good philosophy in answer to it was the lesser of evils. Sometimes, that answer is to take the fight out of the aggressor, not only to secure freedom, but also to preserve the sanctity of life. It’s the mean business called war. And that comes straight out of God’s reality.
God gives us the faith that steels the nerves of men to stand up to the tyrants of this world. There would be no liberty anywhere on Earth today without the sacrifice of those men and women whose strength of conviction would not allow them to cringe and hide when the critical moment came. Rather, they stood even as Abraham stood in faith to the One who is the Resurrection and the Life, and who has promised those who trust in Him that they will never truly die. May God restore to us all the faith to do all in our power to maintain peace throughout the world, and the assurance in Him to fight the well fought fight when peace can be found no other way. Amen.
It has been my privilege to have served in the U.S. Air Force... and I salute my brothers and sisters in arms who preserve the peace throughout the free world on Veterans' Day 2012. "Greater love has no one than this, that he lay down his life for his friends." John 15:13
You can find more beautiful picture books in iBooks store just by searching for JANGYOUNG. Here are some links for you.
itunes.apple.com/us/book/isbn9788998110321
Alberta's amazing farmlands. For most of us, rural life is now just a romantic thought of how many of our past made a living. Few of us today, have an understanding of just how difficult a life it was for those who established & worked these farms.
Photography has been a hobby of mine these past three years. It's a renewed interest once enjoyed, for several years, many decades ago. Recently, it has taken me along hundreds of miles of back roads, where I see the success of many farms that have done well.
However; there are some farms that show evidence of a severe, if not cruelly, difficult lifestyle that early farming offered; and many families had to abandon their homes & lands, and only livelihood they knew.
While growing up, many of my teachers where from these farms. Most never spoke of it but some did. They spoke of the difficulties of the farm life, but, at the times, the stories really had not registered with me.
As I drive these back roads today, I don't see the families on the land. I see only farmyards void of people and their dogs and their chickens. I see homes & farm buildings that have been neglected for many years or decades now falling into ruin & returning to the ground on which they were built. Repeatedly witnessing the many abandoned farmsteads like the one in this image, reinforces the message my teachers tried to related, so many years ago.
My hat is off to these people. They were a hard working, dedicated & industrious people. More often than naught, they and many others in other walks of life came to this country with little or no money or possessions and built this province and the country, that we know today.
Lorna & I were out together this day. For her interpretation of this subject see,"Fading memories"
It was two days after Christmas when my mother woke us up that fateful morning thirty something years ago. My sister and I had started sleeping in the same room again. There was no discussion about it - we just needed the comfort the nearness of another person can provide. I was twelve and my sister was eleven.
I remember the look on my mother’s face. Her eyes were swollen. Her lips pursed.
“I have good news and bad news. The good news is your father is no longer suffering. The bad news is he is gone."
The rest of the day felt like a dream. How could he be dead? We had just spent Christmas Eve with him and he was laughing and having fun. He didn't look like a man about to die.
My father had brain cancer. He was 36 years old when he died. His body withered quickly from the chemo and radiation. When the will was read, my sister and I were too young to understand the shock my mother faced. Later, we’d learn my father left my sister and I almost nothing, but chose instead, to leave most everything to my step-mother.
As I grew up and became a mother, I then understood the magnitude of that decision and became hurt about how little my father left us. How do you not take care of your children - especially when you know you are dying? It left me feeling confused and angry. I loved my children so much that I couldn’t imagine not being sure they were taken care of.
Bitterness became so real I could taste it. My father’s family had quit calling soon after the funeral and our step-mother had quickly remarried. We reached out several times but it felt awkward and forced. It was just easier to stay away and let the anger simmer.
Over the years and despite my disappointments, I’ve never quit missing my father. Several months ago, my father’s sister sent some pictures to me that she’d found. There were pictures of my parents together in a time before I had a memory. And there were pictures of that last Christmas. They took my breath away. In those pictures, my father looked swollen, pale, and sickly. Not at all like the picture in my memory.
For me, time has healed a lot of wounds and I think I understand why he didn’t leave us much in his will.
He didn’t plan on dying.
And for that I can forgive him.
~~
This is me.
Grounded in understanding.
And still missing my dad.
Now You Workshop
Summer 2012
This weeks focus: Roots and Wings
And telling the backstory
If you read all that, then I am truly impressed. It was cathartic to write.
Was waiting for a car or some pedestrians to pass by to add a bit extra when along came these two chaps...
The bike almost seems to be giving them a nod of understanding - the knowledge that perhaps the best of years are gone - the end is far nearer than the beginning....
The Bombings of 1940 forced a reappraisal of deep-shelter policy and at the end of October the Government decided to construct a system of deep shelters linked to existing tube stations. London Transport was consulted about the sites and required to build the tunnels at the public expense with the understanding that they were to have the option of taking them over for railway use after the war. With the latter point in mind, positions were chosen on routes of possible north-south and east-west express tube railways. It was decided that each shelter would comprise two parallel tubes 16 foot 6 inches internal diameter and 1,600 feet long and would be placed below existing station tunnels at Clapham South, Clapham Common, Clapham North, Stockwell, Oval, Goodge Street, Camden Town, Belsize Park, Chancery Lane and St. Pauls...Each tube would have two decks, fully equipped with bunks, medical posts, kitchens and sanitation and each installation would accommodate 9,600 people...All the deep level shelters were sub-divided into sleeping areas. Each tunnel was divided into 4 sections with connecting doors between them. Each section was given a name. At Clapham South they were all naval commanders. The northern entrance sections (i.e. those accessed directly from the northern lift without crossing to the other side) were named: Freemantle, Beatty, Evans, Anson, Nelson, Jellicoe, Madden and Inglefield while those accessed from the southern entrance were: Grenville, Hardy, Drake, Oldham, Keppel, Parry and Ley. Each section had bunks fitted longitudinally along the outer wall, a single at the top, a double in the middle and a single at the bottom. Along the inner wall bunks were fitted across the passage forming bays. There were 7.952 bunks in total and each bunk was allocated to a named person. If they didn't turn up one night the bunk remained unused...Although work on them began in November 1940 there were difficulties in obtaining sufficient labour and materials so the first one was only ready in March 1942 and the other seven were finished later that year. Access to them was by ticket in order to help control numbers and prevent disruption to the underground network. There was considerable pressure to open the shelters to relieve the strain on London’s tube stations from people sheltering from the bombing, but the authorities were concerned about the cost of maintaining the shelters once opened and preferred to keep them in reserve in case the bombing intensified. Clapham South was used as weekend troop accommodation from 1943. The start of the attacks on London by V1 flying bombs (commonly known as ‘doodlebugs’) in June 1944, followed by the V2 rocket campaign in September that year, caused many of the deep shelters to be made fully available to the public; Clapham South opened on 19 July 1944. The south entrance, next door to what was the Odeon cinema, was in a small compound that housed administrative offices and ticket printing presses for all eight deep shelters. The shelters were used for their original purpose for less than a year. The north section closed on 21 October 1944 and the shelter was transferred from the Ministry of Home Security to the Ministry of Works on 1 October 1945. Clapham South closed completely on 7 May 1945 and from June 1945 it found a new use as a military leave hostel and for one month in June 1946 it acted as an armed-forces troop billet. At the end of the war, London had a severe labour shortage and the Colonial Office sought to recruit a labour force from Britain’s colonies. At that time there were no immigration restrictions for citizens from one part of the British Empire moving to another part. An advertisement appeared in Jamaica's Daily Gleaner on 13 April 1948 offering transport to the UK for a fare of £28.10s (£28.50) for anyone who wanted to work in the UK. As a result the ship MV Empire Windrush arrived in Tilbury later in 1948 carrying 492 worker migrants from Jamaica. However, as there was no accommodation for the new arrivals the Colonial Office decided to house them in the deep-level shelter at Clapham South.
The nearest labour exchange to Clapham South was on Coldharbour Lane in Brixton so the men sought jobs there. As a result Brixton became a focus for West Indian settlers from that point onwards with successive arrivals making their way to the developing
community. The actual time the deep-level shelter was occupied by new arrivals was relatively short as the men all quickly found jobs and accommodation, and successfully integrated into many parts of south London.
[Subterranea Britannica]
Today I was asking myself this question. Why peace and love or even understanding disappeared !! it's really quite shame for us as humans to lead ourselves to such a destruction!.We Humans made it all.. we destroy everything our hands touch ! our environment, earth and unfortunately our humanity !!. It's really awful and hurt to see such things on the news !.Regardless of poverty and Epidemics. I'm an 19 year old girl who pray so hard every single night for those people in Gaza ! =) and pray to see peace and smiles in the world. My family got hurt a lot in 1990 ! and I saw how deep my relatives wounded ! and I'm sure many of you had that experience!. so, how they can handle all that pain !!! if we couldn't handle it for 7 months ??.Gaza's children are dying in front of TV's cameras ! there are blood everywhere !. Houses were destroyed ! many women and kids became homeless! and orphans and all of them asking for help ! for peace for love for a bit of understanding. What are happening in Gaza now is a war crime :), barbaric kill with no sense of mercy or even faith. And what really pised me off that the Palestinians are trapped ! they have less weapons to fight and they can't even take their children out of gaza ! =) again it's war crime which will not be forgiven till we kick those israelis out.
Peace out ='')
Copyright © Daisy. All rights reserved
How many roads you’ve traveled
How many dreams you’ve chased
Across sand and sky and gravel
Looking for one safe place
Will you make a smoother landing
When you break your fall from grace
Into the arms of understanding
Looking for one safe place
Oh, life is trial by fire
And love’s the sweetest taste
And I pray it lifts us higher
To one safe place
How many roads we’ve traveled
How many dreams we’ve chased
Across sand and sky and gravel
Looking for one safe place
One safe place - Mark Cohn
Calle de la Victoria + Calle Porzo. Taberna La Fontana de Oro. Madrid España. Leica-M6 TTL 0,72 Elmarit-M 1:2.8/21 mm ASPH.
Nikon super Coolscan 5000ed.
Ilford Delta 100asa. Kodak developer HC 110 1+31 (B)
🔴Leica my point of view.
Wetzlar, Deutschland.
Leica-CL 1974 Rangefinder
Leica-M 6 TTL 0.72 1998 Rangefinder
Leica-M6 TTL 0.85 2001 Rangefinder
This morning we are responding to a fire at a block of flats near Grovelands Road, Reading. We will update this post with our updates from the scene. Updates from Thames Valley Police can be found on their Twitter feed: twitter.com/ThamesVP
9:51am update
At 2:51am on Wednesday, 15 December, we received reports of a fire at a block of flats in Grovelands Road, Reading.
Royal Berkshire Fire and Rescue Service crews from Caversham Road, Wokingham Road, Theale, Whitley Wood, Wokingham, Bracknell, Ascot, Crowthorne, Slough, two pumps from Newbury and the Aerial Ladder Platform and Incident Command Unit were sent to the scene, together with seven officers and crews from Oxfordshire County Council Fire and Rescue Service.
Upon arrival, firefighters found a fire within a four-storey block of flats, affecting all levels. Sadly, one person is believed to have died, and there are a number of others who are as yet unaccounted for.
Please avoid the area while emergency services respond to this incident. Thank you for your understanding.
1:00pm update
Crews remain on scene at an incident in a low-rise building in Grovelands Road, Reading. Please continue to avoid the area while emergency services respond to the incident. Thank you for your understanding.
UPDATE - READING FIRE
Our crews remain on the scene of the incident off Grovelands Road, Reading. Following an extensive search yesterday, during which all rescue opportunities were exhausted and confirmed that sadly, if there was anyone else in the building, we do not expect there to be any further survivors.
The building itself is a block of low-rise flats, comprised of four storeys and is traditionally built from brick and timber, without cladding.
A fire engine, alongside the Aerial Ladder Platform and Incident Command Unit are still in attendance. They will be remaining on scene to assist with extinguishing any hot spots from the fire and we are working with our partners to put in place safe systems of work for the ongoing recovery work.
From the assessment on scene today, it has been established that gaining safe access could take quite some time due to the deterioration in the structure of the building from the fire. Based on this, we expect to remain in attendance over the coming days.
This is an incredibly challenging time and we’d like to reassure those affected by this incident, the families of those impacted and the wider community that we are working incredibly hard, alongside colleagues from the Police.
Separately, the Fire Investigation will be underway once access to the building is confirmed as safe to enter.
We’d like to thank our residents for their continued co-operation, patience and support and further updates will be provided once the building has been confirmed as safe to enter.
Theme #37 Letters
52 in 2016 Challenge
Letters build powerful words.
Take note politicians - you could learn from this passage by author Gavriel Savit! Anna and the Swallow Man, is a great read for young adults and adults!
Book review: flic.kr/p/Equ7fw
My understanding is that when Trim Castle Hotel was constructed it was necessary to replace a wall partly owned by the church so as compensation the builders undertook to provide the ’stations of the cross’ shown in my photographs.
Because of uneven ground and the location of some trees it can be difficult to properly photograph all of the stations without introducing some distortion. This is, in fact, my third attempt.
If you are not Christian and even then the ’Stations Of The Cross’ may be a bit of a mystery to you.
I should mention that when I was young there were fourteen stations … 7 on each side of the church. When I first photographed the stations in Trim I was more than confused to discover that there were fifteen with the additional one being the Resurrection of Jesus. Further investigation resulted in the following explanation - “Some modern liturgists say the traditional Stations of the Cross are incomplete without a final scene depicting the empty tomb and/or the resurrection of Jesus, because Jesus' rising from the dead was an integral part of his salvific work on Earth. Advocates of the traditional form of the Stations ending with the body of Jesus being placed in the tomb say the Stations are intended as a meditation on the atoning death of Jesus, and not as a complete picture of his life, death, and resurrection”.
Stations of the Cross or the Way of the Cross, also known as Way of Sorrows or Via Crucis, refers to a series of images depicting Jesus Christ on the day of his crucifixion and accompanying prayers. The stations grew out of imitations of Via Dolorosa in Jerusalem which is believed to be the actual path Jesus walked to Mount Calvary. The object of the stations is to help the Christian faithful to make a spiritual pilgrimage through contemplation of the Passion of Christ. It has become one of the most popular devotions and the stations can be found in the churches of many Western Christian denominations, including Anglican, Catholic, Lutheran, Methodist and Western Orthodox parishes.
Commonly, a series of 14 images will be arranged in numbered order along a path and the faithful travel from image to image, in order, stopping at each "station to say the selected prayers and reflections. This will be done individually or in a procession most commonly during Lent, especially on Good Friday, in a spirit of reparation for the sufferings and insults that Jesus endured during his passion.
The style, form, and placement of the stations vary widely. The typical stations are small plaques with reliefs or paintings placed around a church nave. Modern minimalist stations can be simple crosses with a numeral in the centre. Occasionally the faithful might say the stations of the cross without there being any image, such as when the pope leads the stations of the cross around the Colosseum in Rome on Good Friday. The older stations can be an outdoor series of chapels in a landscape, known as a Calvary, and are sites of pilgrimage in their own right. Examples include Sacro Monte Calvario in Italy, Kalwaria Zebrzydowska in Poland, Žemaičių Kalvarija in Lithuania.
THREE PHOTOS, OVERLAID ONE on the another, tell a still hidden story, or at least a story not well known of this now famous Air Canada “stretch” DC-8 crash.
While these photos are not a perfect match-up (because each photo was taken from a different vantage point)…still, their alignment IS close enough. Can there be any doubt about what they reveal?
There are distinctive land based markers from the span of years 1970, 2004, and 2018 that once matched—and brought together through a digital overlay—tell the astute viewer this untold story: The FLIGHT 621 MEMORIAL GARDEN (Castlemore) Ontario sits RIGHT ON TOP of the exact July 5, 1970 crash point of the ill-fated airliner.
Compare the 1970 UPI Press photo, with the 2004 Google Earth photo, and the final 2018 Google Earth photo noting the circled markers with their contents—which align—almost perfectly.
It is here where the crippled Air Canada “Stretch” DC-8-63 (CF-TIW) went fourteen feet into the ground at approximately 250 mph, killing all 109 passengers and crew in what remains Air Canada’s largest loss of life accident to this day.
The Memorial Garden, the 109 granite markers (representing each person who perished) and the large pink granite boulder with its’ black granite plaque inscribed with each crash victim’s name and the adjacent portioned off parcel of land marked by its’ double row of fledgling trees (to the immediate south, right in the photo) display the careful planning, and consideration of the land developers and planning partners.
This hallowed bit of ground indeed encapsulates the main body of the Air Canada DC-8 crash.
And while the City of Brampton wanted to locate the Memorial Garden and Cemetery somewhere…“near to” the crash site, it was engineer Diarmuid Horgan, of Candevcon Limited, who insisted the Memorial be placed right atop the actual crash point. And rightly so.
I am someone who walked the field numerous times, back in the day, stood at the old (now removed) bridge and atop the former Burgsma residence.
I was there when the new house was being erected atop the old Burgsma home lot—with Burgsma kitchen tile and other household remnants—on the very boundary of the new home’s concrete basement. So the planners got the crash location right, as can now be seen by all who view my video.
BUT—IS THAT IT?
No, the Castlemore Memorial is still more.
It is an official Ontario irregular cemetery.
Unfortunately, bones of crash victims were inadvertently left behind after the crash.
Or were buried deeply by the force of the crash at the time—pushed downward into the soil—eventually surfacing decades later.
I, (Paul Cardin) made the first unpleasant discovery of Flight 621’s victim’s bones still remaining in the field, in June 2002, after seeing a Mike Strobel SUN article (November 2001) revisiting the 1970 crash accompanied by Will Burgsma who resided in the house noted in the video. With Mike’s article sitting in my car for months, I finally had the opportunity to go have a look in the early summer of 2002.
Hundreds of bones (and notable aircraft wreckage) were eventually collected by myself and other members of “Friends of Flight 621” (Carol Parr, Barb Winckler, Carrie Parr, Tom Stone, Mike Quatrale, Gord Ransom, Rebecca Reid, and the independent researcher Jan Burton). Some victim families also found aircraft wreckage on site, but thankfully no bone fragments. Peter Hill, son of Second Officer (navigator) did however find a partial denture which was startling to all of us there with him.
In 2003, ex-Metro police officer Tom Stone called Robert Milton (Air Canada CEO) himself and put forth the idea of a new memorial being erected on site, and that the deplorable situation of victim’s bones remains still being found at the former crash site be rectified. Days later, Tom and I were in the field with three Air Canada executives, and Doug Kirkwood, who had assisted with the crash clean-up emergency personnel back in July of 1970. The executive trio were surprised to find so much aircraft debris still in the field, that one of them was even able to identify a piece he found, and where it had come from on the aircraft!
In 2004, Carol Parr, on CBC TV again, with viewers in the millions called for a memorial to be built on the former crash site.
In 2004, Barbara Winckler, a 1970 eyewitness to the Air Canada crash, gathered an information package together for the City of Brampton that included photos, newspaper clippings, history and details about the crash, pages from the crash report AND most importantly information about how and why the Province of Ontario can accord irregular cemetery status to unusual grave-sites. This information package was given to Jim Leonard of the Brampton Historical Society, who presented it to the City, for us.
Given the existing situation at the former crash site, Barb knew that the Air Canada crash site would qualify as an irregular cemetery, as she, and Carol Parr (another eyewitness to the crash) had together, with other “Friends”, found numerous bones in the farm field themselves! At a multitude of locations.
I had a Flight 621 website that noted, complete with pictures, from 2003 onward, the more ridiculous and recent happenings and discoveries at the former crash site.
Several victim’s families found my Flight 621 website and contacted me though it. Some came to the field, including a member of the Labonte family who expressed their distress about the ongoing bone situation, to their Quebec MP at the time, who then raised the issue in the House of Commons!
In 2006, Diarmuid Horgan called an aviation archeologist, Dana Poulton, and his associates to investigate the former crash site. The team proceeded to conduct digs and discovered 90 more victim’s bones—all over the former crash site. It was then determined that the existing “situation” of the field had to be properly dealt with. A problem “Friends of Flight 621”, on TV, through newspaper and radio, web sites, and postings had complained about for years—but lacked official capacity with the City, or those who would actually address these specific matters. City Councillor, John Sprovieri, did respond to us, and told us the situation would take about five years to wind its way through city hall.
But he noted, I, or rather my discoveries, had created a “situation”!
John stated that if people were told about the crash—many…probably wouldn’t want to buy a new house there. And if potential homeowners weren’t told about the crash, and found out later—well, the City could be sued.
But the situation was resolved. Potential homeowners were told about the crash, people bought homes there, AND most importantly to me, no more crash victim bones would be found at the former crash site.
Proper burial of the deceased is a corporeal work of mercy, as every Catholic knows. Jesus, the Lord, Himself, was buried according to long-held Jewish religious practices of the Old Covenant. Jews and Catholics know the importance God places on a proper burial. Only savages, or the reprobate, don’t bury their dead. And considering the horrific nature of the crash itself, the lives lost so tragically, with the additional indignity of the remaining bones (inadvertently left behind for more than three decades) out there a farm field, in all seasons—proper burial of the victims at that point—became an indispensable work of charity surpassing even almsgiving itself.
The bones the “Friends of Flight 621” found were turned over to the Coroner’s Office through Candevcon Limited. The remaining victim’s bones still dispersed within the crash site soil, were finally gathered together strategically, by removing the large tract of affected soil, and entombing it right under the Flight 621 Memorial Garden and Cemetery. The area which includes the crash arena is currently marked off by the double row of trees, previously mentioned, and with additional white obelisks. I myself witnessed, and photographed part of this encapsulating process, as it unfolded.
Let the readership note, victims of Flight 621 at the time of the crash were buried by Air Canada in Toronto’s Mount Pleasant Cemetery, among famous Canadians, musicians, and even a prime minister or two.
But it is here, in Castlemore on July 5, 1970—where these passengers and crew of Flight 621 breathed their last.
So, it is only fitting, that they are also buried here.
Check here, on July 5, 2020, after 7 pm:
www.flickr.com/photos/78215847@N00/albums/721576246894922...
ADD A CONDOLENCE to the FLIGHT 621 FAMILIES, or a LOVED ONE from FLIGHT 621, or a MEMORY of a PERSONAL EVENT related to the crash…at the City of Brampton's permanent Flight 621 site…SEE: www.brampton.ca/EN/City-Hall/Protocol-Office/Brampton-Rem...
REST IN PEACE passengers and crew of Flight 621:
Adams, Celine Fradette
Adams, Pierre J
Beaudin, Gaetan
Belanger, Mrs.
Belanger, Jacques
Belanger, Jean
Belanger, Roland
Belanger, Rosanne
Benson, Helen
Benson, Leonard
Benson, Mary
Benson, Richard
Bertrand, Ginette
Boosamra, Lynn
Boulanger, Guy
Bradshaw, Dollie
Cedilot, Robert J
Chapdeleine, Jeannine
Chapdeleine, Joanne
Chapdeleine, Mario
Charent, Jean Maurice
Clarke, Devona Olivia
Cote, Francine
Daoust, Yolande
Desmarais, Brigitte
Desmarais, G
Dicaire, Alice (Marie)
Dicaire, Gilles
Dicaire, Linda
Dicaire, Luke
Dicaire, Mark
Dion, Suzanne
Dore, Jacqueline
Earle, Lewella
Earle, Linda
Filippone, Francesco
Filippone, Linda
Filippone, Marie
Gee, Bernard
Goulet, Denise M
Grenier, Madeleine
Growse, Diana Cicely
Growse, Jane
Growse, Roger
Hamilton, Karen E
Hamilton, Peter Cameron
Herrmann, Ronald Alvin
Hill, Harry Gordon
Holiday, Claude
Houston, Irene Margaret
Houston, Wesley
Jakobsen, Vagn Aage
Labonte, Gilles
Leclaire, Marie Rose
Leclaire, Oscar
Leduc, Henri W
Lepage, Claudette
Mailhiot, Claire Gagnon
Mailhiot, Gerald Bernard
Maitz, Gustave
Maitz, Karoline
McKettrick, Winnifred
McTague, John
Medizza, Carla
Mohammed, Dolly
Molino, Antonio
Molino, Michael (Michel)
Moore, Frederick T
Partridge, Andrea
Partridge, Carnie (Carnis) Ann
Partridge, Cyril Wayne
Phillips, Kenneth William
Poirier, Rita
Raymond, Gilles
Raymond, Martial
Robert, Aline
Robert, Georges E
Robidoux, Lionel
Rowland, Donald
Silverberg, Marci
Silverberg, Merle
Silverberg, Steven
Simon, Istvan
Simon, Mark
Smith, Dwight Lee
St. Laurent, Blanche
Stepping, Glenn Thomas
Sultan, Celia
Sultan, Jerald. M
Sultan, Robert. L
Szpakowicz, Borys
Szpakowicz, Serge
Tielens, Carmen
Tielens, Frederick
Tournovits, George
Tournovits, Soula (Athanasia)
Weinberg, Carla
Weinberg, Rita
Weinberg, Wendy
Whittingham, Jennifer
Whittingham, John
Whittingham, Reginald
Whybro, Mary Baker
Wieczorek, Hildegund
Witmer, Edgar
Wong, Ngar-Quon
Wong, Suzie
Wong, Wong (Mansing)
Woodward, Dallas J
© 2020 LPR CARDIN II - Friends of Flight 621
© 1970 UPI Press
© 2004 Google Earth Maps
© 2018 Google Earth Maps
© 2014 Dominican Sisters of Mary, Mother of the Eucharist,
....."Let Nothing Disturb You"
U.S. Secretary of Agriculture Thomas Vilsack gives remarks prior to signing a memorandum of understanding between NASA and USDA, Wednesday, June 21, 2023, at the USDA’s Jamie L. Whitten Building in Washington. The agreement strengthens the collaboration between the two agencies, including efforts to improve agricultural and Earth science research, technology, and agricultural management, as well as the application of science data and models to agricultural decision making. Photo Credit: (NASA/Bill Ingalls)
Shuttle358
Book :
New Order
Retro
London Records
2008
Photography . Nick Knight
Art Direction . Peter Saville
CD :
Pinkcourtesyphone
Elegant & Detached
ROOM40
RM451
Music & Design . Richard Chartier
iTunes :
New Order
Sub Vulture
Factory
FAC133
Sir GMAttenborough ...
I found this heart-wrenching poem while surfing on youtube. It was written by Roger Valentine and posted for a friend with autism. Beneath the surface of the words is a very human journey that many of us have taken and still take. Silence and suffering paralyzes us in darkest chaos. In helplessness all seems to be lost and pointless. Eventually wisdom rejuvenates us with kindness and understanding. In this light we find our voice and our uniqueness. In joy we overflow with who we are meant to be. This poem is eloquently recited by Rajesh Vedprakash whose silk laden vocals really add emotion to this superb piece. Thank-you kindly Mukhtarze for posting this.
Listening to the clip inspired this digital art piece.
Listen: www.youtube.com/profile?user=mukhtarze#p/u/17/cq45qrxczmQ
Text for Poem: Click Here
The International Space Station (ISS) is a space station (habitable artificial satellite) in low Earth orbit. The ISS programme is a joint project between five participating space agencies: NASA (United States), Roscosmos (Russia), JAXA (Japan), ESA (Europe), and CSA (Canada).[6][7] The ownership and use of the space station is established by intergovernmental treaties and agreements.[8]
The ISS serves as a microgravity and space environment research laboratory in which crew members conduct experiments in biology, human biology, physics, astronomy, meteorology, and other fields.[9][10][11] The station is suited for the testing of spacecraft systems and equipment required for missions to the Moon and Mars.[12] The ISS maintains an orbit with an average altitude of 400 kilometres (250 mi) by means of reboost manoeuvres using the engines of the Zvezda module or visiting spacecraft.[13] It circles the Earth in roughly 92 minutes and completes 15.5 orbits per day.[14]
The station is divided into two sections, the Russian Orbital Segment (ROS), which is operated by Russia, and the United States Orbital Segment (USOS), which is shared by many nations. Roscosmos has endorsed the continued operation of ISS through 2024,[15] but had previously proposed using elements of the Russian segment to construct a new Russian space station called OPSEK.[16]As of December 2018, the station is expected to operate until 2030.[17]
The first ISS component was launched in 1998, with the first long-term residents arriving on 2 November 2000.[18] Since then, the station has been continuously occupied for 18 years and 359 days.[19] This is the longest continuous human presence in low Earth orbit, having surpassed the previous record of 9 years and 357 days held by Mir. The latest major pressurised module was fitted in 2011, with an experimental inflatable space habitat added in 2016. Development and assembly of the station continues, with several major new Russian elements scheduled for launch starting in 2020. The ISS is the largest human-made body in low Earth orbit and can often be seen with the naked eye from Earth.[20][21] The ISS consists of pressurised habitation modules, structural trusses, solar arrays, radiators, docking ports, experiment bays and robotic arms. Major ISS modules have been launched by Russian Proton and Soyuz rockets and US Space Shuttles.[22]
The ISS is the ninth space station to be inhabited by crews, following the Soviet and later Russian Salyut, Almaz, and Mir stations as well as Skylab from the US. The station is serviced by a variety of visiting spacecraft: the Russian Soyuz and Progress, the US Dragon and Cygnus, the Japanese H-II Transfer Vehicle,[6] and the European Automated Transfer Vehicle. The Dragon spacecraft allows the return of pressurised cargo to Earth (downmass), which is used for example to repatriate scientific experiments for further analysis. The Soyuz return capsule has minimal downmass capability next to the astronauts.
The ISS has been visited by astronauts, cosmonauts and space tourists from 18 different nations. As of 14 March 2019, 236 people from 18 countries had visited the space station, many of them multiple times. The United States sent 149 people, Russia sent 47, nine were Japanese, eight were Canadian, five were Italian, four were French, three were German, and there were one each from Belgium, Brazil, Denmark, Kazakhstan, Malaysia, the Netherlands, South Africa, United Arab Emirates, South Korea, Spain, Sweden, and the United Kingdom.[23]
Contents
1 Purpose
2 Manufacturing
3 Assembly
4 Structure
5 Systems
6 Operations
7 Mission controls
8 Fleet operations
9 Life aboard
10 Crew health and safety
11 Orbital debris threats
12 End of mission
13 Cost
14 International co-operation
15 Sightings from Earth
16 See also
17 Notes
18 References
19 Further reading
20 External links
Purpose
The ISS was originally intended to be a laboratory, observatory, and factory while providing transportation, maintenance, and a low Earth orbit staging base for possible future missions to the Moon, Mars, and asteroids. However, not all of the uses envisioned in the initial Memorandum of Understanding between NASA and Roskosmos have come to fruition.[24] In the 2010 United States National Space Policy, the ISS was given additional roles of serving commercial, diplomatic[25] and educational purposes.[26]
Scientific research
Main article: Scientific research on the International Space Station
Comet Lovejoy photographed by Expedition 30 commander Dan Burbank
Expedition 8 Commander and Science Officer Michael Foale conducts an inspection of the Microgravity Science Glovebox
Fisheye view of several labs
CubeSats are deployed by the NanoRacks CubeSat Deployer
The ISS provides a platform to conduct scientific research, with power, data, cooling, and crew available to support experiments. Small uncrewed spacecraft can also provide platforms for experiments, especially those involving zero gravity and exposure to space, but space stations offer a long-term environment where studies can be performed potentially for decades, combined with ready access by human researchers.[27][28]
The ISS simplifies individual experiments by allowing groups of experiments to share the same launches and crew time. Research is conducted in a wide variety of fields, including astrobiology, astronomy, physical sciences, materials science, space weather, meteorology, and human research including space medicine and the life sciences.[9][10][11][29][30] Scientists on Earth have timely access to the data and can suggest experimental modifications to the crew. If follow-on experiments are necessary, the routinely scheduled launches of resupply craft allows new hardware to be launched with relative ease.[28] Crews fly expeditions of several months' duration, providing approximately 160 person-hours per week of labour with a crew of 6. However, a considerable amount of crew time is taken up by station maintenance.[9][31]
Perhaps the most notable ISS experiment is the Alpha Magnetic Spectrometer (AMS), which is intended to detect dark matter and answer other fundamental questions about our universe and is as important as the Hubble Space Telescope according to NASA. Currently docked on station, it could not have been easily accommodated on a free flying satellite platform because of its power and bandwidth needs.[32][33] On 3 April 2013, scientists reported that hints of dark matter may have been detected by the AMS.[34][35][36][37][38][39] According to the scientists, "The first results from the space-borne Alpha Magnetic Spectrometer confirm an unexplained excess of high-energy positrons in Earth-bound cosmic rays."
The space environment is hostile to life. Unprotected presence in space is characterised by an intense radiation field (consisting primarily of protons and other subatomic charged particles from the solar wind, in addition to cosmic rays), high vacuum, extreme temperatures, and microgravity.[40] Some simple forms of life called extremophiles,[41] as well as small invertebrates called tardigrades[42] can survive in this environment in an extremely dry state through desiccation.
Medical research improves knowledge about the effects of long-term space exposure on the human body, including muscle atrophy, bone loss, and fluid shift. This data will be used to determine whether high duration human spaceflight and space colonisation are feasible. As of 2006, data on bone loss and muscular atrophy suggest that there would be a significant risk of fractures and movement problems if astronauts landed on a planet after a lengthy interplanetary cruise, such as the six-month interval required to travel to Mars.[43][44]
Medical studies are conducted aboard the ISS on behalf of the National Space Biomedical Research Institute (NSBRI). Prominent among these is the Advanced Diagnostic Ultrasound in Microgravity study in which astronauts perform ultrasound scans under the guidance of remote experts. The study considers the diagnosis and treatment of medical conditions in space. Usually, there is no physician on board the ISS and diagnosis of medical conditions is a challenge. It is anticipated that remotely guided ultrasound scans will have application on Earth in emergency and rural care situations where access to a trained physician is difficult.[45][46][47]
Free fall
ISS crew member storing samples
A comparison between the combustion of a candle on Earth (left) and in a free fall environment, such as that found on the ISS (right)
Gravity at the altitude of the ISS is approximately 90% as strong as at Earth's surface, but objects in orbit are in a continuous state of freefall, resulting in an apparent state of weightlessness.[48] This perceived weightlessness is disturbed by five separate effects:[49]
Drag from the residual atmosphere.
Vibration from the movements of mechanical systems and the crew.
Actuation of the on-board attitude control moment gyroscopes.
Thruster firings for attitude or orbital changes.
Gravity-gradient effects, also known as tidal effects. Items at different locations within the ISS would, if not attached to the station, follow slightly different orbits. Being mechanically interconnected these items experience small forces that keep the station moving as a rigid body.
Researchers are investigating the effect of the station's near-weightless environment on the evolution, development, growth and internal processes of plants and animals. In response to some of this data, NASA wants to investigate microgravity's effects on the growth of three-dimensional, human-like tissues, and the unusual protein crystals that can be formed in space.[10]
Investigating the physics of fluids in microgravity will provide better models of the behaviour of fluids. Because fluids can be almost completely combined in microgravity, physicists investigate fluids that do not mix well on Earth. In addition, examining reactions that are slowed by low gravity and low temperatures will improve our understanding of superconductivity.[10]
The study of materials science is an important ISS research activity, with the objective of reaping economic benefits through the improvement of techniques used on the ground.[50] Other areas of interest include the effect of the low gravity environment on combustion, through the study of the efficiency of burning and control of emissions and pollutants. These findings may improve current knowledge about energy production, and lead to economic and environmental benefits. Future plans are for the researchers aboard the ISS to examine aerosols, ozone, water vapour, and oxides in Earth's atmosphere, as well as cosmic rays, cosmic dust, antimatter, and dark matter in the universe.[10]
Exploration
A 3D plan of the Russia-based MARS-500 complex, used for ground-based experiments which complement ISS-based preparations for a human mission to Mars
The ISS provides a location in the relative safety of Low Earth Orbit to test spacecraft systems that will be required for long-duration missions to the Moon and Mars. This provides experience in operations, maintenance as well as repair and replacement activities on-orbit, which will be essential skills in operating spacecraft farther from Earth, mission risks can be reduced and the capabilities of interplanetary spacecraft advanced.[12] Referring to the MARS-500 experiment, ESA states that "Whereas the ISS is essential for answering questions concerning the possible impact of weightlessness, radiation and other space-specific factors, aspects such as the effect of long-term isolation and confinement can be more appropriately addressed via ground-based simulations".[51] Sergey Krasnov, the head of human space flight programmes for Russia's space agency, Roscosmos, in 2011 suggested a "shorter version" of MARS-500 may be carried out on the ISS.[52]
In 2009, noting the value of the partnership framework itself, Sergey Krasnov wrote, "When compared with partners acting separately, partners developing complementary abilities and resources could give us much more assurance of the success and safety of space exploration. The ISS is helping further advance near-Earth space exploration and realisation of prospective programmes of research and exploration of the Solar system, including the Moon and Mars."[53] A crewed mission to Mars may be a multinational effort involving space agencies and countries outside the current ISS partnership. In 2010, ESA Director-General Jean-Jacques Dordain stated his agency was ready to propose to the other four partners that China, India and South Korea be invited to join the ISS partnership.[54] NASA chief Charlie Bolden stated in February 2011, "Any mission to Mars is likely to be a global effort".[55] Currently, US federal legislation prevents NASA co-operation with China on space projects.[56]
Education and cultural outreach
Original Jules Verne manuscripts displayed by crew inside Jules Verne ATV
The ISS crew provides opportunities for students on Earth by running student-developed experiments, making educational demonstrations, allowing for student participation in classroom versions of ISS experiments, and directly engaging students using radio, videolink and email.[6][57] ESA offers a wide range of free teaching materials that can be downloaded for use in classrooms.[58] In one lesson, students can navigate a 3-D model of the interior and exterior of the ISS, and face spontaneous challenges to solve in real time.[59]
JAXA aims to inspire children to "pursue craftsmanship" and to heighten their "awareness of the importance of life and their responsibilities in society."[60] Through a series of education guides, a deeper understanding of the past and near-term future of crewed space flight, as well as that of Earth and life, will be learned.[61][62] In the JAXA Seeds in Space experiments, the mutation effects of spaceflight on plant seeds aboard the ISS is explored. Students grow sunflower seeds which flew on the ISS for about nine months. In the first phase of Kibō utilisation from 2008 to mid-2010, researchers from more than a dozen Japanese universities conducted experiments in diverse fields.[63]
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ESA Astronaut Paolo Nespoli's spoken voice, recorded about the ISS in November 2017, for Wikipedia
Cultural activities are another major objective. Tetsuo Tanaka, director of JAXA's Space Environment and Utilization Center, says "There is something about space that touches even people who are not interested in science."[64]
Amateur Radio on the ISS (ARISS) is a volunteer programme which encourages students worldwide to pursue careers in science, technology, engineering and mathematics through amateur radio communications opportunities with the ISS crew. ARISS is an international working group, consisting of delegations from nine countries including several countries in Europe as well as Japan, Russia, Canada, and the United States. In areas where radio equipment cannot be used, speakerphones connect students to ground stations which then connect the calls to the station.[65]
First Orbit is a feature-length documentary film about Vostok 1, the first crewed space flight around the Earth. By matching the orbit of the International Space Station to that of Vostok 1 as closely as possible, in terms of ground path and time of day, documentary filmmaker Christopher Riley and ESA astronaut Paolo Nespoli were able to film the view that Yuri Gagarin saw on his pioneering orbital space flight. This new footage was cut together with the original Vostok 1 mission audio recordings sourced from the Russian State Archive. Nespoli, during Expedition 26/27, filmed the majority of the footage for this documentary film, and as a result is credited as its director of photography.[66] The film was streamed through the website firstorbit.org in a global YouTube premiere in 2011, under a free licence.[67]
In May 2013, commander Chris Hadfield shot a music video of David Bowie's "Space Oddity" on board the station; the film was released on YouTube.[68] It was the first music video ever to be filmed in space.[69]
In November 2017, while participating in Expedition 52/53 on the ISS, Paolo Nespoli made two recordings (one in English the other in his native Italian) of his spoken voice, for use on Wikipedia articles. These were the first content made specifically for Wikipedia, in space.[70][71]
Manufacturing
Main article: Manufacturing of the International Space Station
ISS module Node 2 manufacturing and processing in the SSPF
Since the International Space Station is a multi-national collaborative project, the components for in-orbit assembly were manufactured in various countries around the world. Beginning in the mid 1990s, the U.S. components Destiny, Unity, the Integrated Truss Structure, and the solar arrays were fabricated at the Marshall Space Flight Center and the Michoud Assembly Facility. These modules were delivered to the Operations and Checkout Building and the Space Station Processing Facility for final assembly and processing for launch.[72]
The Russian modules, including Zarya and Zvezda, were manufactured at the Khrunichev State Research and Production Space Center in Moscow. Zvezda was initially manufactured in 1985 as a component for Mir-2, but was never launched and instead became the ISS Service Module.[73]
The European Space Agency Columbus module was manufactured at the European Space Research and Technology Centre (ESTEC) in the Netherlands, along with many other contractors throughout Europe.[74] The other ESA-built modules - Harmony, Tranquility, the Leonardo MPLM, and the Cupola - were initially manufactured at the Thales Alenia Space factory located at the Cannes Mandelieu Space Center. The structural steel hulls of the modules were transported by aircraft to the Kennedy Space Center SSPF for launch processing.[75]
The Japanese Experiment Module Kibō, was fabricated in various technology manufacturing facilities in Japan, at the NASDA (now JAXA) Tanegashima Space Center, and the Institute of Space and Astronautical Science. The Kibo module was transported by ship and flown by aircraft to the KSC Space Station Processing Facility.[76]
The Mobile Servicing System, consisting of the Canadarm2 and the Dextre grapple fixture, was manufactured at various factories in Canada and the United States under contract by the Canadian Space Agency. The mobile base system, a connecting framework for Canadarm2 mounted on rails, was built by Northrop Grumman.
Assembly
Main articles: Assembly of the International Space Station and List of ISS spacewalks
The assembly of the International Space Station, a major endeavour in space architecture, began in November 1998.[3] Russian modules launched and docked robotically, with the exception of Rassvet. All other modules were delivered by the Space Shuttle, which required installation by ISS and shuttle crewmembers using the Canadarm2 (SSRMS) and extra-vehicular activities (EVAs); as of 5 June 2011, they had added 159 components during more than 1,000 hours of EVA (see List of ISS spacewalks). 127 of these spacewalks originated from the station, and the remaining 32 were launched from the airlocks of docked Space Shuttles.[77] The beta angle of the station had to be considered at all times during construction.[78]
The first module of the ISS, Zarya, was launched on 20 November 1998 on an autonomous Russian Proton rocket. It provided propulsion, attitude control, communications, electrical power, but lacked long-term life support functions. Two weeks later, a passive NASA module Unity was launched aboard Space Shuttle flight STS-88 and attached to Zarya by astronauts during EVAs. This module has two Pressurised Mating Adapter (PMAs), one connects permanently to Zarya, the other allowed the Space Shuttle to dock to the space station. At that time, the Russian station Mir was still inhabited, and the ISS remained uncrewed for two years. On 12 July 2000, Zvezda was launched into orbit. Preprogrammed commands on board deployed its solar arrays and communications antenna. It then became the passive target for a rendezvous with Zarya and Unity: it maintained a station-keeping orbit while the Zarya-Unity vehicle performed the rendezvous and docking via ground control and the Russian automated rendezvous and docking system. Zarya's computer transferred control of the station to Zvezda's computer soon after docking. Zvezda added sleeping quarters, a toilet, kitchen, CO2 scrubbers, dehumidifier, oxygen generators, exercise equipment, plus data, voice and television communications with mission control. This enabled permanent habitation of the station.[79][80]
The first resident crew, Expedition 1, arrived in November 2000 on Soyuz TM-31. At the end of the first day on the station, astronaut Bill Shepherd requested the use of the radio call sign "Alpha", which he and cosmonaut Krikalev preferred to the more cumbersome "International Space Station".[81] The name "Alpha" had previously been used for the station in the early 1990s,[82] and its use was authorised for the whole of Expedition 1.[83] Shepherd had been advocating the use of a new name to project managers for some time. Referencing a naval tradition in a pre-launch news conference he had said: "For thousands of years, humans have been going to sea in ships. People have designed and built these vessels, launched them with a good feeling that a name will bring good fortune to the crew and success to their voyage."[84] Yuri Semenov, the President of Russian Space Corporation Energia at the time, disapproved of the name "Alpha" as he felt that Mir was the first modular space station, so the names "Beta" or "Mir 2" for the ISS would have been more fitting.[83][85][86]
Expedition 1 arrived midway between the flights of STS-92 and STS-97. These two Space Shuttle flights each added segments of the station's Integrated Truss Structure, which provided the station with Ku-band communication for US television, additional attitude support needed for the additional mass of the USOS, and substantial solar arrays supplementing the station's existing 4 solar arrays.[87]
Over the next two year, the station continued to expand. A Soyuz-U rocket delivered the Pirs docking compartment. The Space Shuttles Discovery, Atlantis, and Endeavour delivered the Destiny laboratory and Quest airlock, in addition to the station's main robot arm, the Canadarm2, and several more segments of the Integrated Truss Structure.
The expansion schedule was interrupted by the Space Shuttle Columbia disaster in 2003 and a resulting hiatus in flights. The Space Shuttle was grounded until 2005 with STS-114 flown by Discovery.[88]
Assembly resumed in 2006 with the arrival of STS-115 with Atlantis, which delivered the station's second set of solar arrays. Several more truss segments and a third set of arrays were delivered on STS-116, STS-117, and STS-118. As a result of the major expansion of the station's power-generating capabilities, more pressurised modules could be accommodated, and the Harmony node and Columbus European laboratory were added. These were soon followed by the first two components of Kibō. In March 2009, STS-119 completed the Integrated Truss Structure with the installation of the fourth and final set of solar arrays. The final section of Kibō was delivered in July 2009 on STS-127, followed by the Russian Poisk module. The third node, Tranquility, was delivered in February 2010 during STS-130 by the Space Shuttle Endeavour, alongside the Cupola, followed in May 2010 by the penultimate Russian module, Rassvet. Rassvet was delivered by Space Shuttle Atlantis on STS-132 in exchange for the Russian Proton delivery of the US-funded Zarya module in 1998.[89] The last pressurised module of the USOS, Leonardo, was brought to the station in February 2011 on the final flight of Discovery, STS-133.[90] The Alpha Magnetic Spectrometer was delivered by Endeavour on STS-134 the same year.[91]
As of June 2011, the station consisted of 15 pressurised modules and the Integrated Truss Structure. Five modules are still to be launched, including the Nauka with the European Robotic Arm, the Prichal module, and two power modules called NEM-1 and NEM-2.[92] As of March 2019, Russia's future primary research module Nauka is set to launch in the summer of 2020, along with the European Robotic Arm which will be able to relocate itself to different parts of the Russian modules of the station.[93]
The gross mass of the station changes over time. The total launch mass of the modules on orbit is about 417,289 kg (919,965 lb) (as of 3 September 2011).[94] The mass of experiments, spare parts, personal effects, crew, foodstuff, clothing, propellants, water supplies, gas supplies, docked spacecraft, and other items add to the total mass of the station. Hydrogen gas is constantly vented overboard by the oxygen generators.
The ISS is a third generation[95] modular space station.[96] Modular stations can allow modules to be added to or removed from the existing structure, allowing greater flexibility.
Below is a diagram of major station components. The blue areas are pressurised sections accessible by the crew without using spacesuits. The station's unpressurised superstructure is indicated in red. Other unpressurised components are yellow. The Unity node joins directly to the Destiny laboratory. For clarity, they are shown apart.
Zarya
Zarya as seen by Space Shuttle Endeavour during STS-88
Zarya (Russian: Заря́, lit. 'Dawn'), also known as the Functional Cargo Block or FGB (from the Russian: "Функционально-грузовой блок", lit. 'Funktsionalno-gruzovoy blok' or ФГБ), is the first module of the ISS to be launched.[97] The FGB provided electrical power, storage, propulsion, and guidance to the ISS during the initial stage of assembly. With the launch and assembly in orbit of other modules with more specialized functionality, Zarya is now[when?] primarily used for storage, both inside the pressurized section and in the externally mounted fuel tanks. The Zarya is a descendant of the TKS spacecraft designed for the Russian Salyut program. The name Zarya, which means sunrise,[97] was given to the FGB because it signified the dawn of a new era of international cooperation in space. Although it was built by a Russian company, it is owned by the United States.[98]
Zarya was built from December 1994 to January 1998 at the Khrunichev State Research and Production Space Center (KhSC) in Moscow.[97]
Zarya was launched on 20 November 1998 on a Russian Proton rocket from Baikonur Cosmodrome Site 81 in Kazakhstan to a 400 km (250 mi) high orbit with a designed lifetime of at least 15 years. After Zarya reached orbit, STS-88 launched on 4 December 1998 to attach the Unity module.
Unity
Unity as seen by Space Shuttle Endeavour during STS-88
Main article: Unity (ISS module)
The Unity connecting module, also known as Node 1, is the first U.S.-built component of the ISS. It connects the Russian and United States segments of the station, and is where crew eat meals together.
The module is cylindrical in shape, with six berthing locations (forward, aft, port, starboard, zenith, and nadir) facilitating connections to other modules. Unity measures 4.57 metres (15.0 ft) in diameter, is 5.47 metres (17.9 ft) long, made of steel, and was built for NASA by Boeing in a manufacturing facility at the Marshall Space Flight Center in Huntsville, Alabama. Unity is the first of the three connecting modules; the other two are Harmony and Tranquility.
Unity was carried into orbit as the primary cargo of the Space Shuttle Endeavour on STS-88, the first Space Shuttle mission dedicated to assembly of the station. On 6 December 1998, the STS-88 crew mated the aft berthing port of Unity with the forward hatch of the already orbiting Zarya module. This was the first connection made between two station modules.
Zvezda
Zvezda as seen by Space Shuttle Endeavour during STS-97
Main article: Zvezda (ISS module)
Zvezda (Russian: Звезда́, meaning "star"), Salyut DOS-8, also known as the Zvezda Service Module, is a module of the ISS. It was the third module launched to the station, and provides all of the station's life support systems, some of which are supplemented in the USOS, as well as living quarters for two crew members. It is the structural and functional center of the Russian Orbital Segment, which is the Russian part of the ISS. Crew assemble here to deal with emergencies on the station.[99][100][101]
The basic structural frame of Zvezda, known as "DOS-8", was initially built in the mid-1980s to be the core of the Mir-2 space station. This means that Zvezda is similar in layout to the core module (DOS-7) of the Mir space station. It was in fact labeled as Mir-2 for quite some time in the factory. Its design lineage thus extends back to the original Salyut stations. The space frame was completed in February 1985 and major internal equipment was installed by October 1986.
The rocket used for launch to the ISS carried advertising; it was emblazoned with the logo of Pizza Hut restaurants,[102][103][104] for which they are reported to have paid more than US$1 million.[105] The money helped support Khrunichev State Research and Production Space Center and the Russian advertising agencies that orchestrated the event.[106]
On 26 July 2000, Zvezda became the third component of the ISS when it docked at the aft port of Zarya. (U.S. Unity module had already been attached to the Zarya.) Later in July, the computers aboard Zarya handed over ISS commanding functions to computers on Zvezda.[107]
Destiny
The Destiny module being installed on the ISS
Main article: Destiny (ISS module)
The Destiny module, also known as the U.S. Lab, is the primary operating facility for U.S. research payloads aboard the International Space Station (ISS).[108][109] It was berthed to the Unity module and activated over a period of five days in February, 2001.[110] Destiny is NASA's first permanent operating orbital research station since Skylab was vacated in February 1974.
The Boeing Company began construction of the 14.5-tonne (32,000 lb) research laboratory in 1995 at the Michoud Assembly Facility and then the Marshall Space Flight Center in Huntsville, Alabama.[108] Destiny was shipped to the Kennedy Space Center in Florida in 1998, and was turned over to NASA for pre-launch preparations in August 2000. It launched on 7 February 2001 aboard the Space Shuttle Atlantis on STS-98.[110]
Quest
Quest Joint Airlock Module
Main article: Quest Joint Airlock
The Quest Joint Airlock, previously known as the Joint Airlock Module, is the primary airlock for the ISS. Quest was designed to host spacewalks with both Extravehicular Mobility Unit (EMU) spacesuits and Orlan space suits. The airlock was launched on STS-104 on 14 July 2001. Before Quest was attached, Russian spacewalks using Orlan suits could only be done from the Zvezda service module, and American spacewalks using EMUs were only possible when a Space Shuttle was docked. The arrival of Pirs docking compartment on September 16, 2001 provided another airlock from which Orlan spacewalks can be conducted.[citation needed]
Pirs and Poisk
The Pirs module attached to the ISS.
Poisk after arriving at the ISS on 12 November 2009.
Main articles: Pirs (ISS module) and Poisk (ISS module)
Pirs (Russian: Пирс, lit. 'pier') and Poisk (Russian: По́иск, lit. 'search') are Russian airlock modules, each having 2 identical hatches. An outward-opening hatch on the Mir space station failed after it swung open too fast after unlatching, because of a small amount of air pressure remaining in the airlock.[111] All EVA hatches on the ISS open inwards and are pressure-sealing. Pirs was used to store, service, and refurbish Russian Orlan suits and provided contingency entry for crew using the slightly bulkier American suits. The outermost docking ports on both airlocks allow docking of Soyuz and Progress spacecraft, and the automatic transfer of propellants to and from storage on the ROS.[112]
Pirs was launched on 14 September 2001, as ISS Assembly Mission 4R, on a Russian Soyuz-U rocket, using a modified Progress spacecraft, Progress M-SO1, as an upper stage. Poisk was launched on 10 November 2009[113][114] attached to a modified Progress spacecraft, called Progress M-MIM2, on a Soyuz-U rocket from Launch Pad 1 at the Baikonur Cosmodrome in Kazakhstan.
Harmony
Harmony shown connected to Columbus, Kibo, and Destiny. PMA-2 faces. The nadir and zenith locations are open.
Main article: Harmony (ISS module)
Harmony, also known as Node 2, is the "utility hub" of the ISS. It connects the laboratory modules of the United States, Europe and Japan, as well as providing electrical power and electronic data. Sleeping cabins for four of the six crew are housed here.[115]
Harmony was successfully launched into space aboard Space Shuttle flight STS-120 on October 23, 2007.[116][117] After temporarily being attached to the port side of the Unity node,[118][119] it was moved to its permanent location on the forward end of the Destiny laboratory on November 14, 2007.[120] Harmony added 2,666 cubic feet (75.5 m3) to the station's living volume, an increase of almost 20 percent, from 15,000 cu ft (420 m3) to 17,666 cu ft (500.2 m3). Its successful installation meant that from NASA's perspective, the station was "U.S. Core Complete".
Tranquility
Tranquility in 2011
Main article: Tranquility (ISS module)
Tranquility, also known as Node 3, is a module of the ISS. It contains environmental control systems, life support systems, a toilet, exercise equipment, and an observation cupola.
ESA and the Italian Space Agency had Tranquility built by Thales Alenia Space. A ceremony on November 20, 2009 transferred ownership of the module to NASA.[121] On February 8, 2010, NASA launched the module on the Space Shuttle's STS-130 mission.
Columbus
The Columbus module on the ISS
Main article: Columbus (ISS module)
Columbus is a science laboratory that is part of the ISS and is the largest single contribution to the ISS made by the European Space Agency (ESA).
Like the Harmony and Tranquility modules, the Columbus laboratory was constructed in Turin, Italy by Thales Alenia Space. The functional equipment and software of the lab was designed by EADS in Bremen, Germany. It was also integrated in Bremen before being flown to the Kennedy Space Center (KSC) in Florida in an Airbus Beluga. It was launched aboard Space Shuttle Atlantis on 7 February 2008 on flight STS-122. It is designed for ten years of operation. The module is controlled by the Columbus Control Centre, located at the German Space Operations Centre, part of the German Aerospace Center in Oberpfaffenhofen near Munich, Germany.
The European Space Agency has spent €1.4 billion (about US$2 billion) on building Columbus, including the experiments that will fly in it and the ground control infrastructure necessary to operate them.[122]
Kibō
Kibō Exposed Facility on the right
Main article: Kibo (ISS module)
The Japanese Experiment Module (JEM), nicknamed Kibo (きぼう Kibō, Hope), is a Japanese science module for the ISS developed by JAXA. It is the largest single ISS module, and is attached to the Harmony module. The first two pieces of the module were launched on Space Shuttle missions STS-123 and STS-124. The third and final components were launched on STS-127.[123]
Pressurised Module
Experiment Logistics Module
Exposed Facility
Experiment Logistics Module
Remote Manipulator System
Cupola
The Cupola's windows with shutters open.
Main article: Cupola (ISS module)
The Cupola is an ESA-built observatory module of the ISS. Its name derives from the Italian word cupola, which means "dome". Its seven windows are used to conduct experiments, dockings and observations of Earth. It was launched aboard Space Shuttle mission STS-130 on 8 February 2010 and attached to the Tranquility (Node 3) module. With the Cupola attached, ISS assembly reached 85 percent completion. The Cupola's central window has a diameter of 80 cm (31 in).[124]
Rassvet
Rassvet as seen from the Cupola module during STS-132 with a Progress in the lower right
Main article: Rassvet (ISS module)
Rassvet (Russian: Рассве́т; lit. "dawn"), also known as the Mini-Research Module 1 (MRM-1) (Russian: Малый исследовательский модуль, МИМ 1) and formerly known as the Docking Cargo Module (DCM), is a component of the ISS. The module's design is similar to the Mir Docking Module launched on STS-74 in 1995. Rassvet is primarily used for cargo storage and as a docking port for visiting spacecraft. It was flown to the ISS aboard Space Shuttle Atlantis on the STS-132 mission on May 14, 2010,[125] and was connected to the ISS on May 18.[126] The hatch connecting Rassvet with the ISS was first opened on May 20.[127] On 28 June 2010, the Soyuz TMA-19 spacecraft performed the first docking with the module.[128]
Leonardo
Leonardo Permanent Multipurpose Module
Main article: Leonardo (ISS module)
The Leonardo Permanent Multipurpose Module (PMM) is a module of the ISS. It was flown into space aboard the Space Shuttle on STS-133 on 24 February 2011 and installed on 1 March. Leonardo is primarily used for storage of spares, supplies and waste on the ISS, which was until then stored in many different places within the space station. The Leonardo PMM was a Multi-Purpose Logistics Module (MPLM) before 2011, but was modified into its current configuration. It was formerly one of three MPLM used for bringing cargo to and from the ISS with the Space Shuttle. The module was named for Italian polymath Leonardo da Vinci.
Bigelow Expandable Activity Module
Progression of expansion of BEAM
Main article: Bigelow Expandable Activity Module
The Bigelow Expandable Activity Module (BEAM) is an experimental expandable space station module developed by Bigelow Aerospace, under contract to NASA, for testing as a temporary module on the ISS from 2016 to at least 2020. It arrived at the ISS on 10 April 2016,[129] was berthed to the station on 16 April, and was expanded and pressurized on 28 May 2016.
International Docking Adapter
IDA-1 upright
Main article: International Docking Adapter
The International Docking Adapter (IDA) is a spacecraft docking system adapter developed to convert APAS-95 to the NASA Docking System (NDS)/International Docking System Standard (IDSS). An IDA is placed on each of the ISS' two open Pressurized Mating Adapters (PMAs), both of which are connected to the Harmony module.
IDA-1 was lost during the launch failure of SpaceX CRS-7 on 28 June 2015.[130][131][132]
IDA-2 was launched on SpaceX CRS-9 on 18 July 2016.[133] It was attached and connected to PMA-2 during a spacewalk on 19 August 2016.[134] First docking was achieved with the arrival of Crew Dragon Demo-1 on 3 March 2019. [135]
IDA-3 was launched on the SpaceX CRS-18 mission in July 2019.[136] IDA-3 is constructed mostly from spare parts to speed construction.[137] It was attached and connected to PMA-3 during a spacewalk on 21 August 2019. [138]
Unpressurised elements
ISS Truss Components breakdown showing Trusses and all ORUs in situ
The ISS has a large number of external components that do not require pressurisation. The largest of these is the Integrated Truss Structure (ITS), to which the station's main solar arrays and thermal radiators are mounted.[139] The ITS consists of ten separate segments forming a structure 108.5 m (356 ft) long.[3]
The station was intended to have several smaller external components, such as six robotic arms, three External Stowage Platforms (ESPs) and four ExPRESS Logistics Carriers (ELCs).[140][141] While these platforms allow experiments (including MISSE, the STP-H3 and the Robotic Refueling Mission) to be deployed and conducted in the vacuum of space by providing electricity and processing experimental data locally, their primary function is to store spare Orbital Replacement Units (ORUs). ORUs are parts that can be replaced when they fail or pass their design life, including pumps, storage tanks, antennas, and battery units. Such units are replaced either by astronauts during EVA or by robotic arms.[142] Several shuttle missions were dedicated to the delivery of ORUs, including STS-129,[143] STS-133[144] and STS-134.[145] As of January 2011, only one other mode of transportation of ORUs had been utilised – the Japanese cargo vessel HTV-2 – which delivered an FHRC and CTC-2 via its Exposed Pallet (EP).[146][needs update]
Construction of the Integrated Truss Structure over New Zealand.
There are also smaller exposure facilities mounted directly to laboratory modules; the Kibō Exposed Facility serves as an external 'porch' for the Kibō complex,[147] and a facility on the European Columbus laboratory provides power and data connections for experiments such as the European Technology Exposure Facility[148][149] and the Atomic Clock Ensemble in Space.[150] A remote sensing instrument, SAGE III-ISS, was delivered to the station in February 2017 aboard CRS-10,[151] and the NICER experiment was delivered aboard CRS-11 in June 2017.[152] The largest scientific payload externally mounted to the ISS is the Alpha Magnetic Spectrometer (AMS), a particle physics experiment launched on STS-134 in May 2011, and mounted externally on the ITS. The AMS measures cosmic rays to look for evidence of dark matter and antimatter.[153][154]
The commercial Bartolomeo External Payload Hosting Platform, manufactured by Airbus, is due to launch in May 2019 aboard a commercial ISS resupply vehicle and be attached to the European Columbus module. It will provide a further 12 external payload slots, supplementing the eight on the ExPRESS Logistics Carriers, ten on Kibō, and four on Columbus. The system is designed to be robotically serviced and will require no astronaut intervention. It is named after Christopher Columbus's younger brother.[155][156][157]
Robotic arms and cargo cranes
Commander Volkov stands on Pirs with his back to the Soyuz whilst operating the manual Strela crane holding photographer Kononenko.
Dextre, like many of the station's experiments and robotic arms, can be operated from Earth and perform tasks while the crew sleeps.
The Integrated Truss Structure serves as a base for the station's primary remote manipulator system, called the Mobile Servicing System (MSS), which is composed of three main components. Canadarm2, the largest robotic arm on the ISS, has a mass of 1,800 kilograms (4,000 lb) and is used to dock and manipulate spacecraft and modules on the USOS, hold crew members and equipment in place during EVAs and move Dextre around to perform tasks.[158] Dextre is a 1,560 kg (3,440 lb) robotic manipulator with two arms, a rotating torso and has power tools, lights and video for replacing orbital replacement units (ORUs) and performing other tasks requiring fine control.[159] The Mobile Base System (MBS) is a platform which rides on rails along the length of the station's main truss. It serves as a mobile base for Canadarm2 and Dextre, allowing the robotic arms to reach all parts of the USOS.[160] To gain access to the Russian Segment a grapple fixture was added to Zarya on STS-134, so that Canadarm2 can inchworm itself onto the ROS.[161] Also installed during STS-134 was the 15 m (50 ft) Orbiter Boom Sensor System (OBSS), which had been used to inspect heat shield tiles on Space Shuttle missions and can be used on station to increase the reach of the MSS.[161] Staff on Earth or the station can operate the MSS components via remote control, performing work outside the station without space walks.
Japan's Remote Manipulator System, which services the Kibō Exposed Facility,[162] was launched on STS-124 and is attached to the Kibō Pressurised Module.[163] The arm is similar to the Space Shuttle arm as it is permanently attached at one end and has a latching end effector for standard grapple fixtures at the other.
The European Robotic Arm, which will service the Russian Orbital Segment, will be launched alongside the Multipurpose Laboratory Module in 2017.[164] The ROS does not require spacecraft or modules to be manipulated, as all spacecraft and modules dock automatically and may be discarded the same way. Crew use the two Strela (Russian: Стрела́; lit. Arrow) cargo cranes during EVAs for moving crew and equipment around the ROS. Each Strela crane has a mass of 45 kg (99 lb).
Planned componments
Nauka
Artist's rendering of the Nauka module docked to Zvezda.
Main article: Nauka (ISS module)
Nauka (Russian: Нау́ка; lit. Science), also known as the Multipurpose Laboratory Module (MLM), (Russian: Многофункциональный лабораторный модуль, or МЛМ), is a component of the ISS which has not yet been launched into space. The MLM is funded by the Roscosmos State Corporation. In the original ISS plans, Nauka was to use the location of the Docking and Stowage Module. Later, the DSM was replaced by the Rassvet module and it was moved to Zarya's nadir port. Planners anticipate Nauka will dock at Zvezda's nadir port, replacing Pirs.[165]
The launch of Nauka, initially planned for 2007, has been repeatedly delayed for various reasons. As of September 2019, the launch to the ISS is assigned to no earlier than December 2020.[166] After this date, the warranties of some of Nauka's systems will expire.
Prichal
Mockup of the Prichal module at the Yuri Gagarin Cosmonaut Training Center
Main article: Prichal (ISS module)
Prichal, also known as Uzlovoy Module or UM (Russian: Узловой Модуль "Причал", Nodal Module Berth),[167] is a 4-tonne (8,800 lb)[168] ball-shaped module that will allow docking of two scientific and power modules during the final stage of the station assembly, and provide the Russian segment additional docking ports to receive Soyuz MS and Progress MS spacecraft. UM is due to be launched in 2022.[169] It will be integrated with a special version of the Progress cargo ship and launched by a standard Soyuz rocket, docking to the nadir port of the Nauka module. One port is equipped with an active hybrid docking port, which enables docking with the MLM module. The remaining five ports are passive hybrids, enabling docking of Soyuz and Progress vehicles, as well as heavier modules and future spacecraft with modified docking systems. The node module was intended to serve as the only permanent element of the cancelled OPSEK.[170][171]
Science Power Modules 1 and 2
Science Power Module 1 (SPM-1, also known as NEM-1) Science Power Module 2 (SPM-2, also known as NEM-2) are modules planned to arrive at the ISS in 2022.[169][172][173] It is going to dock to the Prichal module, which is planned to be attached to the Nauka module.[173] If Nauka is cancelled, then the Prichal, SPM-1, and SPM-2 would dock at the zenith port of Zvezda. SPM-1 and SPM-2 would also be required components for the OPSEK space station.[174]
Bishop Airlock Module
Main article: Bishop Airlock Module
The NanoRacks Bishop Airlock Module is a commercially-funded airlock module intended to be launched to the ISS on SpaceX CRS-21 in August 2020.[175][176] The module is being built by NanoRacks, Thales Alenia Space, and Boeing.[177] It will be used to deploy CubeSats, small satellites, and other external payloads for NASA, CASIS, and other commercial and governmental customers.[178]
Cancelled componments
The cancelled Habitation module under construction at Michoud in 1997
Several modules planned for the station were cancelled over the course of the ISS programme. Reasons include budgetary constraints, the modules becoming unnecessary, and station redesigns after the 2003 Columbia disaster. The US Centrifuge Accommodations Module would have hosted science experiments in varying levels of artificial gravity.[179] The US Habitation Module would have served as the station's living quarters. Instead, the sleep stations are now spread throughout the station.[180] The US Interim Control Module and ISS Propulsion Module would have replaced the functions of Zvezda in case of a launch failure.[181] Two Russian Research Modules were planned for scientific research.[182] They would have docked to a Russian Universal Docking Module.[183] The Russian Science Power Platform would have supplied power to the Russian Orbital Segment independent of the ITS solar arrays.
Systems
Life support
Main articles: ISS ECLSS and Chemical oxygen generator
The critical systems are the atmosphere control system, the water supply system, the food supply facilities, the sanitation and hygiene equipment, and fire detection and suppression equipment. The Russian Orbital Segment's life support systems are contained in the Zvezda service module. Some of these systems are supplemented by equipment in the USOS. The MLM Nauka laboratory has a complete set of life support systems.
Atmospheric control systems
A flowchart diagram showing the components of the ISS life support system.
The interactions between the components of the ISS Environmental Control and Life Support System (ECLSS)
The atmosphere on board the ISS is similar to the Earth's.[184] Normal air pressure on the ISS is 101.3 kPa (14.69 psi);[185] the same as at sea level on Earth. An Earth-like atmosphere offers benefits for crew comfort, and is much safer than a pure oxygen atmosphere, because of the increased risk of a fire such as that responsible for the deaths of the Apollo 1 crew.[186] Earth-like atmospheric conditions have been maintained on all Russian and Soviet spacecraft.[187]
The Elektron system aboard Zvezda and a similar system in Destiny generate oxygen aboard the station.[188] The crew has a backup option in the form of bottled oxygen and Solid Fuel Oxygen Generation (SFOG) canisters, a chemical oxygen generator system.[189] Carbon dioxide is removed from the air by the Vozdukh system in Zvezda. Other by-products of human metabolism, such as methane from the intestines and ammonia from sweat, are removed by activated charcoal filters.[189]
Part of the ROS atmosphere control system is the oxygen supply. Triple-redundancy is provided by the Elektron unit, solid fuel generators, and stored oxygen. The primary supply of oxygen is the Elektron unit which produces O
2 and H
2 by electrolysis of water and vents H2 overboard. The 1 kW (1.3 hp) system uses approximately one litre of water per crew member per day. This water is either brought from Earth or recycled from other systems. Mir was the first spacecraft to use recycled water for oxygen production. The secondary oxygen supply is provided by burning O
2-producing Vika cartridges (see also ISS ECLSS). Each 'candle' takes 5–20 minutes to decompose at 450–500 °C (842–932 °F), producing 600 litres (130 imp gal; 160 US gal) of O
2. This unit is manually operated.[190]
The US Orbital Segment has redundant supplies of oxygen, from a pressurised storage tank on the Quest airlock module delivered in 2001, supplemented ten years later by ESA-built Advanced Closed-Loop System (ACLS) in the Tranquility module (Node 3), which produces O
2 by electrolysis.[191] Hydrogen produced is combined with carbon dioxide from the cabin atmosphere and converted to water and methane.
Power and thermal control
Main articles: Electrical system of the International Space Station and External Active Thermal Control System
Russian solar arrays, backlit by sunset
One of the eight truss mounted pairs of USOS solar arrays
Double-sided solar arrays provide electrical power to the ISS. These bifacial cells collect direct sunlight on one side and light reflected off from the Earth on the other, and are more efficient and operate at a lower temperature than single-sided cells commonly used on Earth.[192]
The Russian segment of the station, like most spacecraft, uses 28 volt low voltage DC from four rotating solar arrays mounted on Zarya and Zvezda. The USOS uses 130–180 V DC from the USOS PV array, power is stabilised and distributed at 160 V DC and converted to the user-required 124 V DC. The higher distribution voltage allows smaller, lighter conductors, at the expense of crew safety. The two station segments share power with converters.
The USOS solar arrays are arranged as four wing pairs, for a total production of 75 to 90 kilowatts.[193] These arrays normally track the sun to maximise power generation. Each array is about 375 m2 (4,036 sq ft) in area and 58 m (190 ft) long. In the complete configuration, the solar arrays track the sun by rotating the alpha gimbal once per orbit; the beta gimbal follows slower changes in the angle of the sun to the orbital plane. The Night Glider mode aligns the solar arrays parallel to the ground at night to reduce the significant aerodynamic drag at the station's relatively low orbital altitude.[194]
The station originally used rechargeable nickel–hydrogen batteries (NiH
2) for continuous power during the 35 minutes of every 90-minute orbit that it is eclipsed by the Earth. The batteries are recharged on the day side of the orbit. They had a 6.5-year lifetime (over 37,000 charge/discharge cycles) and were regularly replaced over the anticipated 20-year life of the station.[195] Starting in 2016, the nickel–hydrogen batteries were replaced by lithium-ion batteries, which are expected to last until the end of the ISS program.[196]
The station's large solar panels generate a high potential voltage difference between the station and the ionosphere. This could cause arcing through insulating surfaces and sputtering of conductive surfaces as ions are accelerated by the spacecraft plasma sheath. To mitigate this, plasma contactor units (PCU)s create current paths between the station and the ambient plasma field.[197]
ISS External Active Thermal Control System (EATCS) diagram
The station's systems and experiments consume a large amount of electrical power, almost all of which is converted to heat. To keep the internal temperature within workable limits, a passive thermal control system (PTCS) is made of external surface materials, insulation such as MLI, and heat pipes. If the PTCS cannot keep up with the heat load, an External Active Thermal Control System (EATCS) maintains the temperature. The EATCS consists of an internal, non-toxic, water coolant loop used to cool and dehumidify the atmosphere, which transfers collected heat into an external liquid ammonia loop. From the heat exchangers, ammonia is pumped into external radiators that emit heat as infrared radiation, then back to the station.[198] The EATCS provides cooling for all the US pressurised modules, including Kibō and Columbus, as well as the main power distribution electronics of the S0, S1 and P1 trusses. It can reject up to 70 kW. This is much more than the 14 kW of the Early External Active Thermal Control System (EEATCS) via the Early Ammonia Servicer (EAS), which was launched on STS-105 and installed onto the P6 Truss.[199]
Communications and computers
Main articles: Tracking and Data Relay Satellite and Luch (satellite)
See also: ThinkPad § Use in space
Diagram showing communications links between the ISS and other elements.
The communications systems used by the ISS
* Luch satellite and the Space Shuttle are not currently[when?] in use
Radio communications provide telemetry and scientific data links between the station and Mission Control Centres. Radio links are also used during rendezvous and docking procedures and for audio and video communication between crew members, flight controllers and family members. As a result, the ISS is equipped with internal and external communication systems used for different purposes.[200]
The Russian Orbital Segment communicates directly with the ground via the Lira antenna mounted to Zvezda.[6][201] The Lira antenna also has the capability to use the Luch data relay satellite system.[6] This system fell into disrepair during the 1990s, and so was not used during the early years of the ISS,[6][202][203] although two new Luch satellites—Luch-5A and Luch-5B—were launched in 2011 and 2012 respectively to restore the operational capability of the system.[204] Another Russian communications system is the Voskhod-M, which enables internal telephone communications between Zvezda, Zarya, Pirs, Poisk, and the USOS and provides a VHF radio link to ground control centres via antennas on Zvezda's exterior.[205]
The US Orbital Segment (USOS) makes use of two separate radio links mounted in the Z1 truss structure: the S band (audio) and Ku band (audio, video and data) systems. These transmissions are routed via the United States Tracking and Data Relay Satellite System (TDRSS) in geostationary orbit, allowing for almost continuous real-time communications with NASA's Mission Control Center (MCC-H) in Houston.[22][6][200] Data channels for the Canadarm2, European Columbus laboratory and Japanese Kibō modules were originally also routed via the S band and Ku band systems, with the European Data Relay System and a similar Japanese system intended to eventually complement the TDRSS in this role.[22][206] Communications between modules are carried on an internal wireless network.[207]
An array of laptops in the US lab
Laptop computers surround the Canadarm2 console
UHF radio is used by astronauts and cosmonauts conducting EVAs and other spacecraft that dock to or undock from the station.[6] Automated spacecraft are fitted with their own communications equipment; the ATV uses a laser attached to the spacecraft and the Proximity Communications Equipment attached to Zvezda to accurately dock with the station.[208][209]
The ISS is equipped with about 100 IBM/Lenovo ThinkPad and HP ZBook 15 laptop computers. The laptops have run Windows 95, Windows 2000, Windows XP, Windows 7, Windows 10 and Linux operating systems.[210] Each computer is a commercial off-the-shelf purchase which is then modified for safety and operation including updates to connectors, cooling and power to accommodate the station's 28V DC power system and weightless environment. Heat generated by the laptops does not rise but stagnates around the laptop, so additional forced ventilation is required. Laptops aboard the ISS are connected to the station's wireless LAN via Wi-Fi, which connects to the ground via Ku band. This provides speeds of 10 Mbit/s download and 3 Mbit/s upload from the station, comparable to home DSL connection speeds.[211][212] Laptop hard drives occasionally fail and must be replaced.[213] Other computer hardware failures include instances in 2001, 2007 and 2017; some of these failures have required EVAs to replace computer modules in externally mounted devices.[214][215][216][217]
The operating system used for key station functions is the Debian Linux distribution.[218] The migration from Microsoft Windows was made in May 2013 for reasons of reliability, stability and flexibility.[219]
In 2017, an SG100 Cloud Computer was launched to the ISS as part of OA-7 mission.[220] It was manufactured by NCSIST and designed in collaboration with Academia Sinica, and National Central University under contract for NASA.[221]
Operations
Expeditions and private flights
See also the list of International Space Station expeditions (professional crew), space tourism (private travellers), and the list of human spaceflights to the ISS (both).
Zarya and Unity were entered for the first time on 10 December 1998.
Soyuz TM-31 being prepared to bring the first resident crew to the station in October 2000
ISS was slowly assembled over a decade of spaceflights and crews
Each permanent crew is given an expedition number. Expeditions run up to six months, from launch until undocking, an 'increment' covers the same time period, but includes cargo ships and all activities. Expeditions 1 to 6 consisted of 3 person crews, Expeditions 7 to 12 were reduced to the safe minimum of two following the destruction of the NASA Shuttle Columbia. From Expedition 13 the crew gradually increased to 6 around 2010.[222][223] With the arrival of the US Commercial Crew vehicles in the late 2010s, expedition size may be increased to seven crew members, the number ISS is designed for.[224][225]
Gennady Padalka, member of Expeditions 9, 19/20, 31/32, and 43/44, and Commander of Expedition 11, has spent more time in space than anyone else, a total of 878 days, 11 hours, and 29 minutes.[226] Peggy Whitson has spent the most time in space of any American, totalling 665 days, 22 hours, and 22 minutes during her time on Expeditions 5, 16, and 50/51/52.[227]
Travellers who pay for their own passage into space are termed spaceflight participants by Roscosmos and NASA, and are sometimes referred to as space tourists, a term they generally dislike.[note 1] All seven were transported to the ISS on Russian Soyuz spacecraft. When professional crews change over in numbers not divisible by the three seats in a Soyuz, and a short-stay crewmember is not sent, the spare seat is sold by MirCorp through Space Adventures. When the space shuttle retired in 2011, and the station's crew size was reduced to 6, space tourism was halted, as the partners relied on Russian transport seats for access to the station. Soyuz flight schedules increase after 2013, allowing 5 Soyuz flights (15 seats) with only two expeditions (12 seats) required.[233] The remaining seats are sold for around US$40 million to members of the public who can pass a medical exam. ESA and NASA criticised private spaceflight at the beginning of the ISS, and NASA initially resisted training Dennis Tito, the first person to pay for his own passage to the ISS.[note 2]
Anousheh Ansari became the first Iranian in space and the first self-funded woman to fly to the station. Officials reported that her education and experience make her much more than a tourist, and her performance in training had been "excellent."[234] Ansari herself dismisses the idea that she is a tourist. She did Russian and European studies involving medicine and microbiology during her 10-day stay. The documentary Space Tourists follows her journey to the station, where she fulfilled "an age-old dream of man: to leave our planet as a "normal person" and travel into outer space."[235]
In 2008, spaceflight participant Richard Garriott placed a geocache aboard the ISS during his flight.[236] This is currently the only non-terrestrial geocache in existence.[237] At the same time, the Immortality Drive, an electronic record of eight digitised human DNA sequences, was placed aboard the ISS.[238]
Orbit
Graph showing the changing altitude of the ISS from November 1998 until November 2018
Animation of ISS orbit from 14 September 2018 to 14 November 2018. Earth is not shown.
The ISS is maintained in a nearly circular orbit with a minimum mean altitude of 330 km (205 mi) and a maximum of 410 km (255 mi), in the centre of the thermosphere, at an inclination of 51.6 degrees to Earth's equator. This orbit was selected because it is the lowest inclination that can be directly reached by Russian Soyuz and Progress spacecraft launched from Baikonur Cosmodrome at 46° N latitude without overflying China or dropping spent rocket stages in inhabited areas.[239][240] It travels at an average speed of 27,724 kilometres per hour (17,227 mph), and completes 15.54 orbits per day (93 minutes per orbit).[2][14] The station's altitude was allowed to fall around the time of each NASA shuttle flight to permit heavier loads to be transferred to the station. After the retirement of the shuttle, the nominal orbit of the space station was raised in altitude.[241][242] Other, more frequent supply ships do not require this adjustment as they are substantially higher performance vehicles.[28][243]
Orbital boosting can be performed by the station's two main engines on the Zvezda service module, or Russian or European spacecraft docked to Zvezda's aft port. The ATV is constructed with the possibility of adding a second docking port to its aft end, allowing other craft to dock and boost the station. It takes approximately two orbits (three hours) for the boost to a higher altitude to be completed.[243] Maintaining ISS altitude uses about 7.5 tonnes of chemical fuel per annum[244] at an annual cost of about $210 million.[245]
Orbits of the ISS, shown in April 2013
The Russian Orbital Segment contains the Data Management System, which handles Guidance, Navigation and Control (ROS GNC) for the entire station.[246] Initially, Zarya, the first module of the station, controlled the station until a short time after the Russian service module Zvezda docked and was transferred control. Zvezda contains the ESA built DMS-R Data Management System.[247] Using two fault-tolerant computers (FTC), Zvezda computes the station's position and orbital trajectory using redundant Earth horizon sensors, Solar
A letter from a student is seen during a meeting with NASA Administrator Bill Nelson meets and Secretary of Education Miguel Cardona, prior to a memorandum of understanding (MOU) signing ceremony, Wednesday, May 24, 2023, at the Mary W. Jackson NASA Headquarters building in Washington. The NASA and Department of Education MOU is focused on strengthening the collaboration between the two agencies, including efforts that advance STEM education across the nation. Photo Credit: (NASA/Keegan Barber)
My wife, it must be said, is very understanding when it comes to my photography. What more can a guy ask for ;)
However I've tried a couple of times to interest her in coming out with me and using one of my cameras to take some shots but she has never been keen. So instead, I bought her a camera a couple of years ago (an Olympus Tough because she liked the idea of taking it in the water) and she is using it more and more which is great.
Then last month she visited her folks down in Melbourne and took her camera with her, taking shots of her family and a few of the places she'd been. Awesome.
Tonight she gave me her camera and I had a quick flick through the shots she'd taken and I come across this. I was floored.
"Honey this is freakin awesome" I told her. "Really", she said.
So I thought I'd post this on Flickr so I can show her what other people think.
Thanks very much for looking :)
When fear turns to
excepting your fear
it becomes understanding
of your fear
and then, there is no fear
there is just knowledge.
By AlyssaDawnw
Okay here is something I learned last night from my friend.
Its from the book of "Effortless Mastery" my friend was telling me about it.
So the book is talking about soloing and how people are timid to solo because they believe they will hit the wrong note.
think to yourself right before you play your solo "the first note I play will be the most beautiful note I, or anyone has ever heard". And by thinking and believing this, no matter what note you play, the beauty of that frequency will surface, and not only that, but will guide you to the next note.
Here is what I said, after he told me this.
Its like, going on, with the idea in mind, Im just going to do, what I do, be me, and even though when I take that plunge, it may seem totally off at first to me, it will be absolutely beautiful, because it is me. Okay now I am crying. Thanks
( sorry, this conversation was over FB )
It is absolutely beautiful! And the cool thing is that even if it seems kind of off, that's okay, because the more dissonant something is, the more beautiful the reslease or resolve is! I love it!
my off tune uniqueness, lol
I suppose
ha ha, exactly!
We talked about it for quite a while, thats just snippet.
An answered prayer, thats what you are..
Researchers at the Northwestern University Center of Cancer Nanotechnology Excellence are studying the ways in which cancer cells migrate from existing tumors to create new, metastatic tumors in different regions of the body. By creating micrometer scaled adhesive islands on gold surfaces, they have allowed individual metastatic cells to take on shapes, such as the star depicted above. These shapes provide cues to cancer cells, which respond in the above image by concentrating their motility machinery at the star’s tips. This assay lends itself to large scale screening of cell populations—a problem that has stymied past efforts to find a drug that targets metastatic motility.
This image is part of the Nanotechnology Image Library collection.
Credit: Bartosz Grzybowski, Ph.D., National Cancer Institute, National Institutes of Health
The Arabidopsis plant’s root structure, shown in a cross-section view, is helping to improve understanding of the rhizosphere, or plant root zone. Researchers believe learning more about the rhizosphere will help clarify environmental processes, and perhaps give rise to future climate and environmental solutions. Toward this goal, a rhizosphere research campaign was initiated at EMSL, the Environmental Molecular Sciences Laboratory, a U.S. Department of Energy Office of Science national scientific user facility located at Pacific Northwest National Laboratory. The effort has focused on the Arabidopsis plant’s management of carbon nutrients and subsequent impacts on the diversity of the rhizosphere. The campaign includes scientists from EMSL, PNNL, DOE’s Joint Genome Institute, Brookhaven National Laboratory, the University of Minnesota and the University of Missouri. The work is funded by DOE’s Office of Biological and Environmental Research.
Team members: Ljiljana Paša-Tolić, Alice Dohnalkova, Galya Orr, David Hoyt, Heather Brewer and Angela Norbeck all of EMSL; Kevin Minard, Meng Markillie and Charles Ansong of the PNNL Fundamental & Computational Sciences Directorate; Susannah Green Tringe (DOE-JGI), Richard Ferrieri (BNL), Mike Sadowsky and Chanlan Chun of the University of Minnesota and Gary Stacey, Yaya Cui and Lihui Song of the University of Missouri.
*Image was captured with the Helios Nanolab dual-beam focused ion beam/scanning electron microscope at EMSL and was created by Alice Dohnalkova.
Terms of Use: Our images are freely and publicly available for use with the credit line, "Courtesy of Pacific Northwest National Laboratory." Please use provided caption information for use in appropriate context.
Educational Classroom Poster for teaching elementary math. This one help students understand the concepts and units of Metric Lengths.
Available in letter size and now 11"x17".
One of the manufacturers of the tunnel wall.
The Bombings of 1940 forced a reappraisal of deep-shelter policy and at the end of October the Government decided to construct a system of deep shelters linked to existing tube stations. London Transport was consulted about the sites and required to build the tunnels at the public expense with the understanding that they were to have the option of taking them over for railway use after the war. With the latter point in mind, positions were chosen on routes of possible north-south and east-west express tube railways. It was decided that each shelter would comprise two parallel tubes 16 foot 6 inches internal diameter and 1,600 feet long and would be placed below existing station tunnels at Clapham South, Clapham Common, Clapham North, Stockwell, Oval, Goodge Street, Camden Town, Belsize Park, Chancery Lane and St. Pauls...Each tube would have two decks, fully equipped with bunks, medical posts, kitchens and sanitation and each installation would accommodate 9,600 people...All the deep level shelters were sub-divided into sleeping areas. Each tunnel was divided into 4 sections with connecting doors between them. Each section was given a name. At Clapham South they were all naval commanders. The northern entrance sections (i.e. those accessed directly from the northern lift without crossing to the other side) were named: Freemantle, Beatty, Evans, Anson, Nelson, Jellicoe, Madden and Inglefield while those accessed from the southern entrance were: Grenville, Hardy, Drake, Oldham, Keppel, Parry and Ley. Each section had bunks fitted longitudinally along the outer wall, a single at the top, a double in the middle and a single at the bottom. Along the inner wall bunks were fitted across the passage forming bays. There were 7.952 bunks in total and each bunk was allocated to a named person. If they didn't turn up one night the bunk remained unused...Although work on them began in November 1940 there were difficulties in obtaining sufficient labour and materials so the first one was only ready in March 1942 and the other seven were finished later that year. Access to them was by ticket in order to help control numbers and prevent disruption to the underground network. There was considerable pressure to open the shelters to relieve the strain on London’s tube stations from people sheltering from the bombing, but the authorities were concerned about the cost of maintaining the shelters once opened and preferred to keep them in reserve in case the bombing intensified. Clapham South was used as weekend troop accommodation from 1943. The start of the attacks on London by V1 flying bombs (commonly known as ‘doodlebugs’) in June 1944, followed by the V2 rocket campaign in September that year, caused many of the deep shelters to be made fully available to the public; Clapham South opened on 19 July 1944. The south entrance, next door to what was the Odeon cinema, was in a small compound that housed administrative offices and ticket printing presses for all eight deep shelters. The shelters were used for their original purpose for less than a year. The north section closed on 21 October 1944 and the shelter was transferred from the Ministry of Home Security to the Ministry of Works on 1 October 1945. Clapham South closed completely on 7 May 1945 and from June 1945 it found a new use as a military leave hostel and for one month in June 1946 it acted as an armed-forces troop billet. At the end of the war, London had a severe labour shortage and the Colonial Office sought to recruit a labour force from Britain’s colonies. At that time there were no immigration restrictions for citizens from one part of the British Empire moving to another part. An advertisement appeared in Jamaica's Daily Gleaner on 13 April 1948 offering transport to the UK for a fare of £28.10s (£28.50) for anyone who wanted to work in the UK. As a result the ship MV Empire Windrush arrived in Tilbury later in 1948 carrying 492 worker migrants from Jamaica. However, as there was no accommodation for the new arrivals the Colonial Office decided to house them in the deep-level shelter at Clapham South.
The nearest labour exchange to Clapham South was on Coldharbour Lane in Brixton so the men sought jobs there. As a result Brixton became a focus for West Indian settlers from that point onwards with successive arrivals making their way to the developing
community. The actual time the deep-level shelter was occupied by new arrivals was relatively short as the men all quickly found jobs and accommodation, and successfully integrated into many parts of south London.
[Subterranea Britannica]
I know the feeling one gets when you find that place where rocks totally against all odds "click" together and defy our limited understanding of gravity/balance and the way of this world.......try it sometime. If not check out Bills stream and see what a master excels in with rocks and other interesting items, and is quite happy to show you how. Keep on ROCKIN'
My thanks to Bill Dan for permission to use his images for this mosaic.
1. video clip - bill dan balancing rocks - sausalito . . ., 2. Sweet Nature . . . ., 3. Balance - Mixed Doubles, 4. i told you dude . . . it is my turn now . . ., 5. The Bird landed on this . . ., 6. Wooooooowie . . ., 7. Packman . . . ., 8. FH000040, 9. WE the NATURE . . ., 10. Bill Dan Balancing Rocks . . ., 11. Bill Dan in Studio, 12. Smooth . . ., 13. Hey . . . We are Fits together . . ., 14. Between a Rock & a hard Place . . ., 15. dude . . . it is my turn now . . ., 16. rocks on again . . ., 17. i am the boss . . ., 18. on the chain . . ., 19. rocks on again . . ., 20. Double Up . . ., 21. Very Sweet Collaborations . . ., 22. New Visitor . . ., 23. Moonlight Serenade . . ., 24. Boulder Ballet . . ., 25. Hot Rocks . . ., 26. "Magically Eyed", 27. Couples . . . ., 28. The Sailing Rocks . . ., 29. Earth Face, 30. Absolutely Balancing Rocks . . ., 31. My Little Friend . . ., 32. balancing rocks again . . ., 33. don't touch me . . ., 34. blue moon . . ., 35. i am the real boss . . ., 36. friendly sky . . .
Created with fd's Flickr Toys.
U.S. Secretary of Agriculture Thomas Vilsack signs a memorandum of understanding between NASA and USDA as Undersecretary of Agriculture for research, education and economics, Chavonda Jacobs-Young, left, and NASA Administrator Bill Nelson, look on, Wednesday, June 21, 2023, at the USDA’s Jamie L. Whitten Building in Washington. The agreement strengthens the collaboration between the two agencies, including efforts to improve agricultural and Earth science research, technology, and agricultural management, as well as the application of science data and models to agricultural decision making. Photo Credit: (NASA/Bill Ingalls)