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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. If you wish to license them for commercial purposes, want to purchase prints or are interested in commissioning me to take photos, please send me a Flickr mail or visit my website, www.memoriesbymike.zenfolio.com/, for contact information. Thanks.]
This image from ESA’s Mars Express shows volcanoes, impact craters, tectonic faults, river channels and a lava sea.
This image comprises data gathered by ESA’s Mars Express using its High Resolution Stereo Camera (HRSC) on 13 May and 2 June 2021. The colour image was created using data from the nadir channel, the field of view aligned perpendicular to the surface of Mars, and the colour channels of the HRSC. The ground resolution is approximately 17 m/pixel and the images are centred at about 242°E/19°N. North is up.
Credits: ESA/DLR/FU Berlin, CC BY-SA 3.0 IGO
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. If you wish to license them for commercial purposes, want to purchase prints or are interested in commissioning me to take photos, please send me a Flickr mail or visit my website, www.memoriesbymike.zenfolio.com/, for contact information. Thanks.]
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. If you wish to license them for commercial purposes, want to purchase prints or are interested in commissioning me to take photos, please send me a Flickr mail or visit my website, www.memoriesbymike.zenfolio.com/, for contact information. Thanks.]
2-car DMU set X 4683and X 8680 at Brignais on 5 July 1993. Train 54024, 13:07 Brignais to Lyon Gorge de Loup.
Poor night heron trying to get some daylight zzz's, but the Grackles are back, as noisy and boisterous as ever, no wonder he's red-eyed.
I think I'll make this my last share from Japan. Such a beautiful place with incredibly friendly and helpful people. Thanks for joining me virtually.. This was a street in Arashiyama on the outskirts of Kyoto.
What lies at the heart of this unusual-looking spiral galaxy? The galaxy NGC 4102, featured in this ESA/Hubble Picture of the Week, is home to what astronomers call an active galactic nucleus. Active galactic nuclei are luminous galactic centres powered by supermassive black holes that contain millions to billion times the mass of our Sun. As these black holes ensnare gas from their surroundings and draw it close with their intense gravitational pull, the gas becomes so hot that it begins to glow and emits light from X-ray to radio wavelengths.
At a distance of just 56 million light-years away in the constellation Ursa Major (The Great Bear), NGC 4102 provides an ideal opportunity to study the ways in which active galactic nuclei interact with their home galaxies. Active galactic nuclei come in many different flavours, from extremely powerful types that consume massive amounts of matter and shoot out jets of charged particles, to calmer types that sip gas from their surroundings and glow more faintly.
NGC 4102 likely falls into the latter category. It’s classified as Compton-thick — a way of saying that its nucleus is obscured by a thick layer of gas — and a LINER, or low-ionisation nuclear emission-line region. LINER galaxies are identified by emission lines from certain weakly ionised elements, and they can be powered by a supermassive black hole that is lazily collecting gas from around it.
A previous image of this galaxy, made from data taken with Hubble’s Wide Field Planetary Camera 2 (WFPC2), was released in 2014. This new version presents an upgraded view of the galaxy, using data from the Wide Field Camera 3, which replaced WFPC2 in 2009 and improved upon its resolution and field of view. The new observations come from a programme that will combine visible-light images from Hubble with X-ray information from the Chandra X-ray Observatory to study the relationship between NGC 4102 and its active galactic nucleus.
[Image Description: A spiral galaxy. The inner region immediately around the bright centre is golden in colour. A gap separates this region from a bright ring, itself surrounded by a glowing halo. Strands of dark brown dust swirl around the centre and the outer ring, joined in one spot by a curved arm. Bright, blue and pink specks of light dot the ring, showing where stars are concentrated or have recently formed.]
Credits: ESA/Hubble & NASA, G. Fabbiano; CC BY 4.0
Today’s ESA/Hubble Picture of the Week features the spiral galaxy NGC 4535, which is situated about 50 million light-years away in the constellation Virgo (The Maiden). This galaxy has been nicknamed the ‘Lost Galaxy’ because it’s extremely faint when viewed through a small telescope. With a mirror spanning 2.4 metres across, Hubble is well equipped to observe dim galaxies like NGC 4535 and pick out features like its massive spiral arms and central bar of stars.
On full display in this Hubble image are NGC 4535’s young star clusters, which dot the galaxy’s spiral arms. Many of the groupings of bright blue stars are enclosed by glowing pink clouds. These clouds, called H II (‘H-two’) regions, are a sign that the galaxy is home to especially young, hot, and massive stars that are blazing with high-energy radiation. By heating the clouds in which they were born, shooting out powerful stellar winds, and eventually exploding as supernovae, massive stars certainly shake up their surroundings.
This Hubble image incorporates data from an observing programme that will catalogue roughly 50 000 H II regions in nearby star-forming galaxies like NGC 4535. A previous image of NGC 4535 was released in 2021. Both the 2021 image and today’s image incorporate observations from the PHANGS programme, which seeks to understand the connections between young stars and cold gas. Today’s image adds a new dimension to our understanding of NGC 4535 by capturing the brilliant red glow of the nebulae that encircle massive stars in their first few million years of life.
[Image Description: A close-in view of a spiral galaxy that faces the viewer. Brightly lit spiral arms swing outwards through the galaxy’s disc, starting from an elliptical region in the centre. Thick strands of dark reddish dust are spread across the disc, mostly following the spiral arms. The arms also contain many glowing pink-red spots where stars form. The galaxy is a bit fainter beyond the arms, but speckled with blue stars.]
Credits: ESA/Hubble & NASA, F. Belfiore, J. Lee and the PHANGS-HST Team; CC BY 4.0
Raspberry blackout cake. loads of home grown raspberries (red and yellow) in this cake!
And plum jam in the cake mix too.
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. If you wish to license them for commercial purposes, want to purchase prints or are interested in commissioning me to take photos, please send me a Flickr mail or visit my website, www.memoriesbymike.zenfolio.com/, for contact information. Thanks.]
This is how trees should be topped! This osprey was getting buffeted around a bit in the wind, the grainy background was a mizzle falling. So cool to get a bit of time to do some wildlife photography again.
Today is day 198 of Project 365 (Friday).
No awards... Merci :)
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All rights reserved - Tous droits réservés
Model : Ludivine
Christine Lebrasseur - Photographe
French Website / Site en français
HDC NR:0225 -- 6000 X 4000px @300dpi
This image by Jeff S. PhotoArt is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International License
Canada Goose. ( yup it's Canada, not Canadian -- they're not citizens after all....lol )
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What kind of astronomical object is this? It doesn’t look quite like the kinds of galaxies, nebulae, star clusters or galaxy clusters which Hubble normally brings us images of. In fact, this is a spiral galaxy, named UGC 10043 — we just happen to be seeing it directly from the side! Located roughly 150 million light-years from Earth in the constellation Serpens, UGC 10043 is one of the somewhat rare spiral galaxies that are seen edge-on.
From this point of view, we see the galaxy’s disc as a sharp line through space, overlain with a prominent dust lane. This dust is spread across the spiral arms of UGC 10043, but it looks very thick and cloudy when viewed from the side. You can even see the lights of some active star-forming regions in the arms, shining out from behind the dust. Strikingly, we can also see that the centre of the galaxy sports a glowing, almost egg-shaped ‘bulge’, rising far above and below the disc. All spiral galaxies have a bulge like this one as part of their structure, containing stars that orbit the galactic centre on paths above and below the whirling disc; it’s a feature that isn’t normally obvious in pictures of galaxies. The unusually large size of this bulge compared to the galaxy’s disc is possibly thanks to UGC 10043 siphoning material from a nearby dwarf galaxy. This may also be why the disc is warped, bending up at one end and down at the other.
Like most of the full-colour Hubble images released by ESA/Hubble, this image is a composite, made up of several individual snapshots taken by Hubble at different times and capturing different wavelengths of light. You can see the exact images used in the sidebar on this page. A notable aspect of this image is that the two sets of Hubble data used were collected 23 years apart, in 2000 and 2023! Hubble’s longevity doesn’t just afford us the ability to produce new and better images of old targets; it also provides a long-term archive of data which only becomes more and more useful to astronomers.
[Image Description: A spiral galaxy seen directly from the side, such that its disc looks like a narrow diagonal band across the image. A band of dark dust covers the disc in the centre most of the way out to the ends, and the disc glows around that. In the centre a whitish circle of light bulges out above and below the disc. The tips of the disc are a bit bent. The background is black and mostly empty.]
Credits: ESA/Hubble & NASA, R. Windhorst, W. Keel; CC BY 4.0
Locomotoras en Rosario
Antiguos talleres del ferrocarril
Fotografías Ivan Pawluk
© Iván Pawluk , reservados todos los derechos / all rights reserved
Reconocimiento-NoComercial-SinObraDerivada 3.0 Unported (CC BY-NC-ND 3.0)
PHOTOGRAPHY by Iván Pawluk is licensed under a Creative Commons Reconocimiento-NoComercial-SinObraDerivada 3.0 Unported License.Creado a partir de la obra en www.flickr.com/photos/pawluk/ .Permissions beyond the scope of this license may be available at www.flickr.com/photos/pawluk/ .
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We dont actually get much snow so always a bit of novelty factor associated. All the better on a day I dont have to go to work. Having said that I have not actually gone out in it - just lit the fire and pointed the camera out various windows!
Lou Doillon - Snowed In
The subject of this NASA/ESA Hubble Space Telescope Picture of the Week is NGC 1637, a spiral galaxy located 38 million light-years from Earth in the constellation Eridanus.
This image comes from an observing programme dedicated to studying star formation in nearby galaxies. Stars form in cold, dusty gas clouds that collapse under their own gravity. As young stars grow, they heat their nurseries through starlight, winds, and powerful outflows. Together, these factors play a role in controlling the rate at which future generations of stars form.
Evidence of star formation is scattered all around NGC 1637, if you know where to look. The galaxy’s spiral arms are dotted with what appear to be pink clouds, many of which are accompanied by bright blue stars. The pinkish colour comes from hydrogen atoms that have been excited by ultraviolet light from young, massive stars. This contrasts with the warm yellow glow of the galaxy’s centre, which is home to a densely packed collection of older, redder stars.
The stars that set their birthplaces aglow are comparatively short-lived, and many of these stars will explode as supernovae just a few million years after they’re born. In 1999, NGC 1637 played host to a supernova, pithily named SN 1999EM, that was lauded as the brightest supernova seen that year. When a massive star expires as a supernova, the explosion outshines its entire home galaxy for a short time. While a supernova marks the end of a star’s life, it can also jump start the formation of new stars by compressing nearby clouds of gas, beginning the stellar lifecycle anew.
[Image Description: A spiral galaxy filling the view. Its disc is filled with bright red spots where stars are forming, dark reddish threads of dust that obscure light, and bluish glowing areas where older stars are concentrated. It has a large, glowing yellow oval area at the centre, from which two spiral arms wind through the galaxy’s disc. The bottom side of the disc is rounded while the top side is somewhat squared-off.]
Credits: ESA/Hubble & NASA, D. Thilker; CC BY 4.0
Another of my Thanksgiving Day dramatic sky shots from Fort Ross, with the Pacific and the wooden Russian Church silhouetted on the left, more of the Russian fort complex silhouetted to the right of these. It really was a fabulous sunset. This fort would have been in full use by the Russians during the war of 1812, which is the war that is the backdrop to Tolstoy's War and Peace.
Been seeing a few of these on widow sills - Not quite sure what they are. Maybe Chrysolina sp.
the lines on the card are 8mm apart so the body of the beetle is about 1.2 cm I think (or maybe a bit less)
The giant planet Jupiter, in all its banded glory, is revisited by the NASA/ESA Hubble Space Telescope in these latest images, taken on 5 January 2024, that capture both sides of the planet. Hubble monitors Jupiter and the other outer Solar System planets every year under the Outer Planet Atmospheres Legacy programme (OPAL). This is because these large worlds are shrouded in clouds and hazes stirred up by violent winds, leading to a kaleidoscope of ever-changing weather patterns.
Big enough to swallow Earth, the classic Great Red Spot stands out prominently in Jupiter's atmosphere. To its lower right, at a more southerly latitude, is a feature sometimes dubbed Red Spot Jr. This anticyclone was the result of storms merging in 1998 and 2000, and it first appeared red in 2006 before returning to a pale beige in subsequent years. This year it is somewhat redder again. The source of the red coloration is unknown but may involve a range of chemical compounds: sulphur, phosphorus or organic material. Staying in their lanes, but moving in opposite directions, Red Spot Jr. passes the Great Red Spot about every two years. Another small red anticyclone appears in the far north.
[Image description: Jupiter is banded with stripes of brownish orange, light grey, soft yellow, and shades of cream, punctuated with many large storms and small white clouds. The largest storm, the Great Red Spot, is the most prominent feature in the left bottom third of this view. To its lower right is a smaller reddish anticyclone, Red Spot Jr.]
Credits: NASA, ESA, J. DePasquale (STScI), A. Simon (NASA-GSFC); CC BY 4.0
The swirling spiral galaxy in this NASA/ESA Hubble Space Telescope Picture of the Week is NGC 3285B, which resides 137 million light-years away in the constellation Hydra (The Water Snake). Hydra has the largest area of the 88 constellations that cover the entire sky in a celestial patchwork. It’s also the longest constellation, stretching 100 degrees across the sky. It would take nearly 200 full Moons, placed side by side, to reach from one side of the constellation to the other.
NGC 3285B is a member of the Hydra I cluster, one of the largest galaxy clusters in the nearby Universe. Galaxy clusters are collections of hundreds to thousands of galaxies that are bound to one another by gravity. The Hydra I cluster is anchored by two giant elliptical galaxies at its centre. Each of these galaxies is about 150,000 light-years across, making them about 50% larger than our home galaxy, the Milky Way.
NGC 3285B sits on the outskirts of its home cluster, far from the massive galaxies at the centre. This galaxy drew Hubble’s attention because it hosted a Type Ia supernova in 2023. Type Ia supernovae happen when a type of condensed stellar core called a white dwarf detonates, igniting a sudden burst of nuclear fusion that briefly shines about 5 billion times brighter than the Sun. The supernova, named SN 2023xqm, is visible here as a blue-ish dot on the left edge of the galaxy’s disc.
Hubble observed NGC 3285B as part of an observing programme that targeted 100 Type Ia supernovae. By viewing each of these supernovae in ultraviolet, optical, and near-infrared light, researchers aim to disentangle the effects of distance and dust, both of which can make a supernova appear redder than it actually is. This programme will help refine cosmic distance measurements that rely on observations of Type Ia supernovae.
[Image Description: A spiral galaxy with a disc made up of several swirling arms. Patchy blue clouds of gas are speckled over the disc, where stars are forming and lighting up the gas around them. The core of the galaxy is large and shines brightly gold, while the spiral arms are a paler and faint reddish colour. Neighbouring galaxies - from small, elongated spots to larger swirling spirals - can be seen across the black background.]
Credits: ESA/Hubble & NASA, R. J. Foley (UC Santa Cruz); CC BY 4.0
Believed to be in Public Domain From Library of Congress, Prints and Photographs Collections. More on copyright: What does "no known restrictions" mean?
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Public Domain. Suggested credit: Matson/Library of Congress via pingnews. Additional information from source:
TITLE: Boys school and Mufti of Jerusalem at the Jerusalem Mosque
CALL NUMBER: LC-M32- 50284-x[P&P]
REPRODUCTION NUMBER: LC-DIG-matpc-08281 (digital file from original photo)
No known restrictions on publication.
MEDIUM: 1 negative : glass, dry plate ; 4 x 5 in.
CREATED/PUBLISHED: [between 1921 and 1937]
NOTES:
Title from negative.
On sleeve: Mufti of Jerusalem, 51.
Guide card: Sir Herbert Samuel.
Gift; Episcopal Home; 1978.
SUBJECTS:
Jerusalem.
FORMAT:
Dry plate negatives.
PART OF: G. Eric and Edith Matson Photograph Collection
REPOSITORY: Library of Congress Prints and Photographs Division Washington, D.C. 20540 USA
DIGITAL ID: (digital file from original photo) matpc 08281 hdl.loc.gov/loc.pnp/matpc.08281
CARD #: mpc2005000571/PP
creative commons by marfis75
Twitter: @marfis75
License: cc-by-sa
you are free to share, adapt - attribution: Credits to "marfis75 on flickr"
The galaxy featured in this week’s Hubble Picture of the Week is the dwarf irregular galaxy NGC 5238, located 14.5 million light-years from Earth in the constellation Canes Venatici. Its unexciting, blob-like appearance, resembling more an oversized star cluster than a galaxy, belies a complicated structure which has been the subject of much research by astronomers. Here, the NASA/ESA Hubble Space Telescope is able to pick out the galaxy’s countless stars, as well as its associated globular clusters — the glowing spots both inside and around the galaxy that are swarmed by yet more stars.
NGC 5238 is theorised to have recently — here meaning no more than a billion years ago! — had a close encounter with another galaxy. The evidence for this is the tidal distortions of NGC 5238’s shape, the kind produced by two galaxies pulling on each other as they interact. There’s no nearby galaxy which could have caused this disturbance, so the hypothesis is that the culprit is a smaller satellite galaxy that was devoured by NGC 5238. Traces of the erstwhile galaxy might be found by closely examining the population of stars in NGC 5238, a task for which the Hubble Space Telescope is an astronomer’s best tool. Two tell-tale signs would be groups of stars with properties that look out of place compared to most of the galaxy’s other stars, indicating that they were originally formed in a separate galaxy, or stars that look to have all formed abruptly at around the same time, which would occur during a galactic merger. The data used to make this image will be put to use in testing these predictions.
Despite their small size and unremarkable appearance, it’s not unusual for dwarf galaxies like NGC 5238 to drive our understanding of galaxy formation and evolution. One main theory of galaxy evolution is that galaxies formed ‘bottom-up’ in a hierarchical fashion: star clusters and small galaxies were the first to form out of gas and dark matter, and they gradually were assembled by gravity into galaxy clusters and superclusters, explaining the shape of the very largest structures in the Universe today. A dwarf irregular galaxy like NGC 5238 merging with an even smaller companion is just the type of event that might have begun this process of galaxy assembly in the early Universe. So, it turns out that this tiny galaxy may serve as a test of some of the most fundamental predictions in astrophysics!
[Image Description: A dwarf irregular galaxy. It appears as a cloud of bluish gas, filled with point-like stars that also spread beyond the edge of the gas. A few glowing red clouds sit near its centre. Many other objects can be seen around it: distant galaxies in the background, four-pointed stars in the foreground, and star clusters that are part of the galaxy - shining spots surrounded by more tiny stars.]
Credits: ESA/Hubble & NASA, F. Annibali; CC BY 4.0
A Sailor (statue) looks across at San Francisco with the Golden Gate Bridge obscured in cloud. My Friday evening commute.
in the vegetation in the pond margin, quite a few seem to fall into the pond
about to fly but the shutter got to click first
Billy Nomates - balance is gone
Every street has paper lanterns, some more than others. These were on one of the side streets near Senso-Ji.
This whirling image features a bright spiral galaxy known as MCG-01-24-014, which is located about 275 million light-years from Earth. In addition to being a well-defined spiral galaxy, MCG-01-24-014 has an extremely energetic core, known as an active galactic nucleus (AGN), so it is referred to as an active galaxy. Even more specifically, it is categorised as a Type-2 Seyfert galaxy. Seyfert galaxies host one of the most common subclasses of AGN, alongside quasars. Whilst the precise categorisation of AGNs is nuanced, Seyfert galaxies tend to be relatively nearby ones where the host galaxy remains plainly detectable alongside its central AGN, while quasars are invariably very distant AGNs whose incredible luminosities outshine their host galaxies.
There are further subclasses of both Seyfert galaxies and quasars. In the case of Seyfert galaxies, the predominant subcategories are Type-1 and Type-2. These are differentiated from one another by their spectra — the pattern that results when light is split into its constituent wavelengths — where the spectral lines that Type-2 Seyfert galaxies emit are particularly associated with specific so-called ‘forbidden’ emission. To understand why emitted light from a galaxy could be considered forbidden, it helps to understand why spectra exist in the first place. Spectra look the way they do because certain atoms and molecules will absorb and emit light very reliably at very specific wavelengths. The reason for this is quantum physics: electrons (the tiny particles that orbit the nuclei of atoms and molecules) can only exist at very specific energies, and therefore electrons can only lose or gain very specific amounts of energy. These very specific amounts of energy correspond to certain light wavelengths being absorbed or emitted.
Forbidden emission lines, therefore, are spectral emission lines that should not exist according to certain rules of quantum physics. But quantum physics is complex, and some of the rules used to predict it use assumptions that suit laboratory conditions here on Earth. Under those rules, this emission is ‘forbidden’ — so improbable that it’s disregarded. But in space, in the midst of an incredibly energetic galactic core, those assumptions don’t hold anymore, and the ‘forbidden’ light gets a chance to shine out towards us.
[Image Description: A spiral galaxy. It appears to be almost circular and seen face-on, with two prominent spiral arms winding out from a glowing core. It is centred in the frame as if a portrait. Most of the background is black, with only tiny, distant galaxies, but there are two large bright stars in the foreground, one blue and one red, directly above the galaxy.]
Credits: ESA/Hubble & NASA, C. Kilpatrick; CC BY 4.0
This poor deer has two fawns, and despite having her hooves full, was kind enough to pose for a family portrait, which is kind of special, as this is day 100 of Project 365 (Saturday). I never thought I'd keep this going for this long, but somehow...
Novato, California!