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Charles F. Bolden, Jr. NASA Administrator, addressed the UN Committee on the Peaceful Uses of Outer Space
NASA's Operation IceBridge is flying its summer Arctic land ice campaign in Greenland, continuing its measurements of the Greenland Ice Sheet and its outlet glaciers. This photograph from the mission was taken on Aug. 29, 2017, from 28,000 feet, looking north while surveying Nioghalvfjerdsbrae (79 N) Glacier in northeast Greenland. via NASA ift.tt/2x5KGKi
Something looked amiss with the NASA U-2 as it was climbing to altitude the other day. Do you see what it is?
The RADAR support structure, built in the early 1970s for the new High Accuracy Instrumentation RADAR (HAIR) had to be located & build very precisely, and was the one part of the facility that really incorporated heavy-duty construction techniques.
We'll visit that steel shed in the background soon.
Why does the Sombrero Galaxy look like a hat? Reasons include the Sombrero's unusually large and extended central bulge of stars, and dark prominent dust lanes that appear in a disk that we see nearly edge-on. Billions of old stars cause the diffuse glow of the extended central bulge. Close inspection of the bulge in the above photograph shows many points of light that are actually globular clusters. M104's spectacular dust rings harbor many younger and brighter stars, and show intricate details astronomers don't yet fully understand. The very center of the Sombrero glows across the electromagnetic spectrum, and is thought to house a large black hole. Fifty million-year-old light from the Sombrero Galaxy can be seen with a small telescope towards the constellation of Virgo. via NASA ift.tt/1GPP4Xq
Taking part in the Safari 2000 project in Pietersburg, South Africa
SAFARI 2000 – Pietersberg, 2000
The Southern African Regional Science Initiative (SAFARI 2000) project was an international science initiative to study the linkages between land and atmosphere processes conducted from 1999-2001 in the southern African region. In addition, SAFARI 2000 examined the relationship of biogenic, pyrogenic, and anthropogenic emissions and the consequences of their deposition to the functioning of the biogeophysical and biogeochemical systems of southern Africa.
During September 2000 NASA flew an ER-2 out of Polokwane, also known as Pietersburg. The ER2 carried a number of imaging instruments and was accompanied by low level in situ measurements conducted from a University of Washington C-580. Flying took place over South Africa, Namibia, Botswana, Mozambique and Zambia. The project was supported and supplied by a USAF C-141 and K -135 from March AFB. The single seater ER-2 flew across the Atlantic from Recife Brazil.
daac.ornl.gov/cgi-bin/dataset_lister.pl?p=18
All Photos: Courtesy of Frank Eckardt
One of the tweeps here for the NASA-sponsored Tweetup before tomorrow's launch of the next Mars rover, Curiosity. You can watch live a recording now at: t.co/PJ0WCvS3.
NASA's Solar Dynamics Observatory views our Sun in ten different wavelengths because each wavelength reveals different solar features. via NASA go.nasa.gov/2xPSkHG
Crop of a NASA image of Mars as dipicted by a realufos member.
The image seen here in the sky is representative of some of my "visitors" here in my sky in Australia as you have seen and I have videoed for over seven months now.
Does this send bells ringing or are you still asleep?
Nasa rockets point towards a blue sky at the Space and Rocket center, Huntsville
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by Stephen Badger | Office of Communications, Maryland Department of Natural Resources
NASA Astronaut Ricky Arnold was a special guest at Out of This World Water Day on March 22, 2019. This collection of water education events presented by the Project WET (Water Education for Teachers) Foundation included a presentation for third through fifth graders at Glenallan Elementary School and a water festival, hosted by the Maryland Department of Natural Resources, at Brookside Gardens. In addition to the presentation to students, Arnold also gave the keynote address for the afternoon's Water, Space and STEM Education Symposium and Training.
NASA Administrator Bill Nelson gives remarks during an event celebrating UAE-US collaboration in space, Friday, March 8, 2024, at the Four Seasons Hotel in Washington. Photo Credit: (NASA/Bill Ingalls)
NASA satellites have watched as wind shear has torn Cyclone Iggy apart over the last day. NASA infrared satellite imagery showed that Iggy's strongest thunderstorms have been pushed away from the storm's center and visible imagery shows the storm is being stretched out. Iggy is weakening and heading for a landfall between Geraldton and Perth.
When NASA's Aqua satellite passed over Tropical Cyclone Iggy on Feb. 1 at 1805 UTC (1:05 p.m. EST), the Atmospheric Infrared Sounder (AIRS) instrument aboard captured an infrared look at the cyclone. AIRS data showed that the strongest thunderstorms (with the coldest cloud top temperatures) had been pushed to the southeast of Iggy's center. That convection was pushed by vertical wind shear from the northwest. Once convection is pushed away from a tropical cyclone's center, the storm begins to fall apart. Tropical cyclones must be stacked in the atmosphere like a haystack. If the middle (convection in this case) gets pushed out, then the storm collapses.
The Moderate Resolution Imaging Spectroradiometer (MODIS) instrument aboard NASA's Aqua satellite captured a true color image of Iggy when it passed overhead on Feb. 2, 2012 at 0615 UTC (1:15 a.m. EST). The MODIS image clearly shows how the wind shear is affecting the tropical depression because Iggy appears elongated from northwest to southeast, which is the direction of the wind shear.
The Australian Bureau of Meteorology (ABM) issued severe weather warnings for residents from Kalbarri to Morawa, and from Morawa to Wongan Hills; and Wongan to Narrogin and Harvey. The ABM website noted that the warning includes people in, near or between the following towns: Geraldton, Jurien Bay, Perth, Mandurah, York and Narrogin. Those areas can expect thunderstorms with heavy rainfall, and gusty winds as Iggy continues moving east. Flash flooding is also a possibility from the heavy rainfall.
On February 2, 2012, Tropical Depression Iggy had maximum sustained winds near 30 knots (~35 mph/~56 kph). It was located about 170 nautical miles (~196 miles/~315 km) northwest of Perth, Western Australia, and its center was near 29.9 South latitude and 114.2 East longitude. Iggy was moving to the east at 14 knots (16 mph/~26 kph) and is expected to continue in that direction making landfall before 0300 UTC on February 3, 2012 (or before 10 p.m. EST, Feb. 3). Iggy is expected to quickly weaken to a remnant low as it moves further inland in Western Australia.
Credit: NASA/GSFC/Jeff Schmaltz/MODIS Land Rapid Response Team
Text Credit: Rob Gutro
NASA's Goddard Space Flight Center, Greenbelt, Md.
NASA Goddard Space Flight Center enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission.
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Lt. Governor Miller Tours the NASA Goddard Campus by Patrick Siebert at 8800 Greenbelt Rd, Greenbelt, MD 20771
Title : NASA Group & Congressman
Creator (Photographer) : Unknown
Publisher : Graphic Services
Place of Publication : College Station, Texas
Year (Coverage) : 1964
Document Type : Image
Format : Photographic negative
Dimensions : 4 x 5 inches
Digitization Date : June2010
Description : Unknown
Note : Brazos County, Texas
Collection : Texas A&M University Archives
Resource Identifier : Graphic Services Photos, Box 22, File 22-229
Institution : Texas A&M University, College Station, Texas
Repository : Cushing Memorial Library and Archives
Contact Information : Email: cushing-library@tamu.edu Phone: 979-845-1951
Copyright : It is the users responsibility to secure permission from the copyright holders for publication of any materials. Permission must be obtained in writing prior to publication. Please contact the Cushing Memorial Library for further information
Taking part in the Safari 2000 project in Pietersburg, South Africa
SAFARI 2000 – Pietersberg, 2000
The Southern African Regional Science Initiative (SAFARI 2000) project was an international science initiative to study the linkages between land and atmosphere processes conducted from 1999-2001 in the southern African region. In addition, SAFARI 2000 examined the relationship of biogenic, pyrogenic, and anthropogenic emissions and the consequences of their deposition to the functioning of the biogeophysical and biogeochemical systems of southern Africa.
During September 2000 NASA flew an ER-2 out of Polokwane, also known as Pietersburg. The ER2 carried a number of imaging instruments and was accompanied by low level in situ measurements conducted from a University of Washington C-580. Flying took place over South Africa, Namibia, Botswana, Mozambique and Zambia. The project was supported and supplied by a USAF C-141 and K -135 from March AFB. The single seater ER-2 flew across the Atlantic from Recife Brazil.
daac.ornl.gov/cgi-bin/dataset_lister.pl?p=18
All Photos: Courtesy of Frank Eckardt
This new NASA/ESA Hubble Space Telescope image shows the galaxy IC 335 in front of a backdrop of distant galaxies. IC 335 is part of a galaxy group containing three other galaxies, and located in the Fornax Galaxy Cluster 60 million light-years away. As seen in this image, the disk of IC 335 appears edge-on from the vantage point of Earth. This makes it harder for astronomers to classify it, as most of the characteristics of a galaxy’s morphology — the arms of a spiral or the bar across the center — are only visible on its face. Still, the 45 000 light-year-long galaxy could be classified as an S0 type. These lenticular galaxies are an intermediate state in galaxy morphological classification schemes between true spiral and elliptical galaxies. They have a thin stellar disk and a bulge, like spiral galaxies, but in contrast to typical spiral galaxies they have used up most of the interstellar medium. Only a few new stars can be created out of the material that is left and the star formation rate is very low. Hence, the population of stars in S0 galaxies consists mainly of aging stars, very similar to the star population in elliptical galaxies. As S0 galaxies have only ill-defined spiral arms they are easily mistaken for elliptical galaxies if they are seen inclined face-on or edge-on as IC 335 here. And indeed, despite the morphological differences between S0 and elliptical class galaxies, they share some common characteristics, like typical sizes and spectral features. Both classes are also deemed "early-type" galaxies, because they are evolving passively. However, while elliptical galaxies may be passively evolving when we observe them, they have usually had violent interactions with other galaxies in their past. In contrast, S0 galaxies are either aging and fading spiral galaxies, which never had any interactions with other galaxies, or they are the aging result of a single merger between two spiral galaxies in the past. The exact nature of these galaxies is still a matter of debate. European Space Agency Credit: ESA/Hubble and NASA via NASA ift.tt/1xheUp6
NASA's Dawn spacecraft has become the first mission to achieve orbit around a dwarf planet. The spacecraft was approximately 38,000 miles (61,000) kilometers from Ceres when it was captured by the dwarf planet’s gravity at about 4:39 a.m. PST (7:39 a.m. EST) Friday, March 6. This image of Ceres was taken by the Dawn spacecraft on March 1, just a few days before the mission achieved orbit around the previously unexplored world. The image shows Ceres as a crescent, mostly in shadow because the spacecraft's trajectory put it on a side of Ceres that faces away from the sun until mid-April. When Dawn emerges from Ceres' dark side, it will deliver ever-sharper images as it spirals to lower orbits around the planet. The image was obtained at a distance of about 30,000 miles (about 48,000 kilometers) at a sun-Ceres-spacecraft angle, or phase angle, of 123 degrees. Image scale on Ceres is 1.9 miles (2.9 kilometers) per pixel. Ceres has an average diameter of about 590 miles (950 kilometers). Dawn's mission is managed by NASA's Jet Propulsion Laboratory, Pasadena, California, for NASA's Science Mission Directorate in Washington. Dawn is a project of the directorate's Discovery Program, managed by NASA's Marshall Space Flight Center in Huntsville, Alabama. The University of California, Los Angeles, is responsible for overall Dawn mission science. Orbital ATK Inc., in Dulles, Virginia, designed and built the spacecraft. The German Aerospace Center, the Max Planck Institute for Solar System Research, the Italian Space Agency and the Italian National Astrophysical Institute are international partners on the mission team. For a complete list of acknowledgments, http://ift.tt/1ALN8zu. Image Credit: NASA/JPL-Caltech/UCLA/MPS/DLR/IDA via NASA ift.tt/18XdC8i
Galactic or open star clusters are young. These swarms of stars are born together near the plane of the Milky Way, but their numbers steadily dwindle as cluster members are ejected by galactic tides and gravitational interactions. In fact, this bright open cluster, known as M46, is around 300 million years young. It still contains a few hundred stars within a span of 30 light-years or so. Located about 5,000 light-years away toward the constellation Puppis, M46 also seems to contain contradictions to its youthful status. In this pretty starscape, the colorful, circular patch above and right of the center of M46 is the planetary nebula NGC 2438. Fainter still, a second planetary nebula, PK231+4.1, is identified by the box at the right and enlarged in the inset. Planetary nebulae are a brief, final phase in the life of a sun-like star a billion years old or more, whose central reservoir of hydrogen fuel has been exhausted. NGC 2438 is estimated to be only 3,000 light-years distant, though, and moves at a different speed than M46 cluster members. Along with its fainter cohort, planetary nebula NGC 2438 is likely only by chance appearing near our line-of-sight to the young stars of M46. via NASA 1.usa.gov/1O13Cxk
Now, as you sip your cosmic latte you can view 100 Hubble Space Telescope images at the same time. The popular scenes of the cosmos as captured from low Earth orbit are all combined into this single digital presentation. To make it, Hubble's top 100 images were downloaded and resized to identical pixel dimensions. At each point the 100 pixel values were arranged from lowest to highest, and the middle or median value was chosen for the final image. The combined image results in a visual abstraction - light from across the Universe surrounded by darkness. via NASA ift.tt/XaFbod
Engineers at NASA’s Glenn Research Center are advancing the propulsion system that will propel the first ever mission to redirect an asteroid for astronauts to explore in the 2020s. NASA's Asteroid Redirect Mission will test a number of new capabilities, like advanced Solar Electric Propulsion (SEP), needed for future astronaut expeditions into deep space, including to Mars. The Hall thruster is part of an SEP system that uses 10 times less propellant than equivalent chemical rockets. In a recent test, engineers from Glenn and the Jet Propulsion Laboratory, using a Glenn vacuum chamber to simulate the space environment, successfully tested a new, higher power Hall thruster design, which is more efficient and has longer life. “We proved that this thruster can process three times the power of previous designs and increase efficiency by 50 percent,” said Dan Herman, Electric Propulsion Subsystem lead. Hall thrusters trap electrons in a magnetic field and use them to ionize the onboard propellant. The magnetic field also generates an electric field that accelerates the charged ions creating an exhaust plume of plasma that pushes the spacecraft forward. This method delivers cost-effective, safe and highly efficient in-space propulsion for long duration missions. In addition to propelling an asteroid mission, this new thruster could be used to send large amounts of cargo, habitats and other architectures in support of human missions to Mars. Image Credit: NASA Michelle M. Murphy (Wyle Information Systems, LLC) via NASA ift.tt/1Ex3GzH