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AETD Director, Dennis Andrucyk, is the guest reader for the GCDC Twos on April 26, 2012.
Credit: NASA/Goddard Space Flight Center/Bill Hrybyk
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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VIDEO of the Saturn Rocket : youtu.be/UHUvIZi1T3Y
Photograph by : (me) RubenS | @iseenit_rubens
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New data from NASA’s Chandra X-ray Observatory has provided stringent constraints on the environment around one of the closest supernovas discovered in decades. The Chandra results provide insight into possible cause of the explosion, as described in our press release. On January 21, 2014, astronomers witnessed a supernova soon after it exploded in the Messier 82, or M82, galaxy. Telescopes across the globe and in space turned their attention to study this newly exploded star, including Chandra. Astronomers determined that this supernova, dubbed SN 2014J, belongs to a class of explosions called “Type Ia” supernovas. These supernovas are used as cosmic distance-markers and played a key role in the discovery of the Universe’s accelerated expansion, which has been attributed to the effects of dark energy. Scientists think that all Type Ia supernovas involve the detonation of a white dwarf. One important question is whether the fuse on the explosion is lit when the white dwarf pulls too much material from a companion star like the Sun, or when two white dwarf stars merge. This image contains Chandra data, where low, medium, and high-energy X-rays are red, green, and blue respectively. The boxes in the bottom of the image show close-up views of the region around the supernova in data taken prior to the explosion (left), as well as data gathered on February 3, 2014, after the supernova went off (right). The lack of the detection of X-rays detected by Chandra is an important clue for astronomers looking for the exact mechanism of how this star exploded. The non-detection of X-rays reveals that the region around the site of the supernova explosion is relatively devoid of material. This finding is a critical clue to the origin of the explosion. Astronomers expect that if a white dwarf exploded because it had been steadily collecting matter from a companion star prior to exploding, the mass transfer process would not be 100% efficient, and the white dwarf would be immersed in a cloud of gas. If a significant amount of material were surrounding the doomed star, the blast wave generated by the supernova would have struck it by the time of the Chandra observation, producing a bright X-ray source. Since they do not detect any X-rays, the researchers determined that the region around SN 2014J is exceptionally clean. A viable candidate for the cause of SN 2014J must explain the relatively gas-free environment around the star prior to the explosion. One possibility is the merger of two white dwarf stars, in which case there might have been little mass transfer and pollution of the environment before the explosion. Another is that several smaller eruptions on the surface of the white dwarf cleared the region prior to the supernova. Further observations a few hundred days after the explosion could shed light on the amount of gas in a larger volume, and help decide between these and other scenarios. A paper describing these results was published in the July 20 issue of The Astrophysical Journal and is available online. The first author is Raffaella Margutti from the Harvard-Smithsonian Center for Astrophysics (CfA) in Cambridge, MA, and the co-authors are Jerod Parrent (CfA), Atish Kamble (CfA), Alicia Soderberg (CfA), Ryan Foley (University of Illinois at Urbana-Champaign), Dan Milisavljevic (CfA), Maria Drout (CfA), and Robert Kirshner (CfA). Image Credit: NASA/CXC/SAO/R.Margutti et al › View large image › Chandra on Flickr via NASA ift.tt/1BgKGl9
Couldn't make it out to the tweetup on the launch day, so watched it with the kids on our dock. It was beautiful!
--This photo has been uploaded as part of the NASA Remix Project--
The goal of this group is to encourage people to re-interpret and remix the great photo libarary NASA has released into the public domain. Please take this photo Remix It, make a Mashup by combing this photos with other images or textures and reinvent it into a new piece of art. Go ahead give it a try, its fun! Then post your artwork to the group pool. To view some of the best images in the group you can view our stream on flickr river. If your up for a challenge we host remix competitions every month on our discussion forum.
--This photo has been uploaded as part of the NASA Remix Project--
The goal of this group is to encourage people to re-interpret and remix the great photo libarary NASA has released into the public domain. Please take this photo Remix It, make a Mashup by combing this photos with other images or textures and reinvent it into a new piece of art. Go ahead give it a try, its fun! Then post your artwork to the group pool. To view some of the best images in the group you can view our stream on flickr river. If your up for a challenge we host remix competitions every month on our discussion forum.
A descoberta foi feita com ajuda do telescópio XMM-Newton, da ESA (Agência Espacial Europeia) e pelo Observatório de raios-X Chandra, da Nasa. Confira aqui
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
On Wednesday, March 6, 2019, students in the Flagstaff Unified School District spoke with Astronaut Anne McClain aboard the International Space Station. The opportunity was because a grant awarded to the Lowell Observatory and FUSD from NASA.
--This photo has been uploaded as part of the NASA Remix Project--
The goal of this group is to encourage people to re-interpret and remix the great photo libarary NASA has released into the public domain. Please take this photo Remix It, make a Mashup by combing this photos with other images or textures and reinvent it into a new piece of art. Go ahead give it a try, its fun! Then post your artwork to the group pool. To view some of the best images in the group you can view our stream on flickr river. If your up for a challenge we host remix competitions every month on our discussion forum.
A pair of CubeSats, with the Earth's limb in the background, moments after being ejected from a small satellite deployer outside of the International Space Station's Kibo laboratory module on Wednesday, May 16, 2017. Over a dozen CubeSats were ejected into Earth orbit this week to study Earth and space phenomena for the next one to two years. via NASA ift.tt/2qBi60p
With access doors at Space Launch Complex 37 opened on Nov. 24, 2014, the Orion spacecraft and Delta IV Heavy stack is visible in its entirety inside the Mobile Service Tower where the vehicle is undergoing launch preparations. Orion will make its first flight test on Dec. 4 with a morning launch atop the United Launch Alliance Delta IV Heavy rocket. Orion’s crew module is underneath the Launch Abort System and nose fairing, both of which will jettison about six minutes, 20 seconds after launch. The tower will be rolled away from the rocket and spacecraft 8 hours, 15 minutes before launch to allow the rocket to be fueled and for other launch operations to proceed. The spacecraft will orbit the Earth twice, including one loop that will reach 3,600 miles above Earth. No one will be aboard Orion for this flight test, but the spacecraft is being designed and built to carry astronauts on exploration missions into deep space. Launch is scheduled for Thursday, Dec. 4 at 7:05 a.m. EST, the opening of a 2 hour, 39-minute window for the day. Image Credit: NASA/Kim Shiflett via NASA ift.tt/1rN4OKr
The octagonal RADAR antenna support building, added in about 1970 as part of a RADAR modernization (replacement of the Reeves Instrument Corp MPC-19C RADAR) program. It once would have been topped with a 51' diameter radome.
NASA’s New Horizons spacecraft took this stunning image of Pluto only a few minutes after closest approach on July 14, 2015. The image was obtained at a high phase angle –that is, with the sun on the other side of Pluto, as viewed by New Horizons. Seen here, sunlight filters through and illuminates Pluto’s complex atmospheric haze layers. via NASA ift.tt/1PnJjv2