NASA News

2022-05-31 07:11:24 #NewImage from #Nasa: "Rocket Transits Rippling Sun " The launch of a rocket at sunrise can result in unusual but intriguing images that feature both the rocket and the Sun. Such was the case last month when a SpaceX Falcon 9 rocket blasted off from NASA's Kennedy Space Center carrying 53 more Starlink satellites into low Earth orbit. In the featured launch picture, the rocket's exhaust plume glows beyond its projection onto the distant Sun, the rocket itself appears oddly jagged, and the Sun's lower edge shows peculiar drip-like ripples. The physical cause of all of these effects is pockets of relatively hot or rarefied air deflecting sunlight less strongly than pockets relatively cool or compressed air: refraction. Unaware of the Earthly show, active sunspot region 3014 -- on the upper left -- slowly crosses the Sun. [May 31, 2022] https://apod.nasa.gov/image/2205/FalconSun_Cain_960.jpg Open / Comment

2022-05-30 07:26:41 #NewImage from #Nasa: "Red Crepuscular Rays from an Eclipse " What's happening behind that island? Things both expected and unexpected. Expected, perhaps, the pictured rays of light -- called crepuscular rays -- originate from the Sun. Unexpected, though, the Sun was being partially eclipsed by the Moon at the time -- late last month. Expected, perhaps, the Sun's rays are quite bright as they shine through gaps in below-horizon clouds. Unexpected, though, the crepuscular rays are quite red, likely the result an abundance of aerosols in Earth's atmosphere scattering away much of the blue light. Expected, with hope, a memorable scene featuring both the Moon and the Sun, superposed. Unfortunately, from this location -- in Uruguay looking toward Argentina -- clouds obscured the eclipse -- which wasn't completely unexpected. However, after packing up to go home, the beauty of bright red crepuscular rays emerged -- quite unexpectedly. Oh -- and that island on the horizon -- it's really two islands. [May 30, 2022] https://apod.nasa.gov/image/2205/EclipseRays_Bouvier_960.jpg Open / Comment

2022-05-29 07:16:10 #NewImage from #Nasa: "Simulation TNG50: A Galaxy Cluster Forms " How do clusters of galaxies form? Since our universe moves too slowly to watch, faster-moving computer simulations are created to help find out. A recent effort is TNG50 from IllustrisTNG, an upgrade of the famous Illustris Simulation. The first part of the featured video tracks cosmic gas (mostly hydrogen) as it evolves into galaxies and galaxy clusters from the early universe to today, with brighter colors marking faster moving gas. As the universe matures, gas falls into gravitational wells, galaxies forms, galaxies spin, galaxies collide and merge, all while black holes form in galaxy centers and expel surrounding gas at high speeds. The second half of the video switches to tracking stars, showing a galaxy cluster coming together complete with tidal tails and stellar streams. The outflow from black holes in TNG50 is surprisingly complex and details are being compared with our real universe. Studying how gas coalesced in the early universe helps humanity better understand how our Earth, Sun, and Solar System originally formed. [May 29, 2022] https://img.youtube.com/vi/cNT5yAqpBmI/maxresdefault.jpg Open / Comment

2022-05-28 07:21:32 #NewImage from #Nasa: "RCW 86: Historical Supernova Remnant" In 185 AD, Chinese astronomers recorded the appearance of a new star in the Nanmen asterism. That part of the sky is identified with Alpha and Beta Centauri on modern star charts. The new star was visible for months and is thought to be the earliest recorded supernova. This deep image shows emission nebula RCW 86, understood to be the remnant of that stellar explosion. The narrowband data trace gas ionized by the still expanding shock wave. Space-based images indicate an abundance of the element iron and lack of a neutron star or pulsar in the remnant, suggesting that the original supernova was Type Ia. Unlike the core collapse supernova explosion of a massive star, a Type Ia supernova is a thermonuclear detonation on a a white dwarf star that accretes material from a companion in a binary star system. Near the plane of our Milky Way galaxy and larger than a full moon on the sky this supernova remnant is too faint to be seen by eye though. RCW 86 is some 8,000 light-years distant and around 100 light-years across. [May 28, 2022] https://apod.nasa.gov/image/2205/RCW86_MP1024.jpg Open / Comment

2022-05-27 16:44:47 #NewPhoto from #Nasa: "Hubble Captures Pair of Star-Forming Spirals" This new image from NASA’s Hubble Space Telescope looks at two spiral galaxies, collectively known as Arp 303. [May 27, 2022] http://www.nasa.gov/sites/default/files/thumbnails/image/hubble_ic563_564_7_flat_final.jpg Open / Comment

2022-05-27 16:28:32 #NewReport from #ISS : "ISS Daily Summary Report – 5/26/2022" Payloads: Acoustic Diagnostics: The Acoustic Diagnostics measurements were performed. The Acoustic Upgraded Diagnostics In-Orbit (AUDIO) investigation tests the hearing of ISS crew members before, during, and after flight. This study assesses the possible adverse effects of noise and the microgravity environment aboard the ISS on human hearing. The investigation compares the relationship between the detection Open / Comment

2022-05-27 07:22:00 #NewImage from #Nasa: "Titan: Moon over Saturn" Like Earth's moon, Saturn's largest moon Titan is locked in synchronous rotation. This mosaic of images recorded by the Cassini spacecraft in May of 2012 shows its anti-Saturn side, the side always facing away from the ringed gas giant. The only moon in the solar system with a dense atmosphere, Titan is the only solar system world besides Earth known to have standing bodies of liquid on its surface and an earthlike cycle of liquid rain and evaporation. Its high altitude layer of atmospheric haze is evident in the Cassini view of the 5,000 kilometer diameter moon over Saturn's rings and cloud tops. Near center is the dark dune-filled region known as Shangri-La. The Cassini-delivered Huygens probe rests below and left of center, after the most distant landing for a spacecraft from Earth. [May 27, 2022] https://apod.nasa.gov/image/2205/PIA19642Titan1024.jpg Open / Comment

2022-05-27 01:36:50 #BreakingNews from #Nasa: "NASA to Pick Next Generation Spacesuits for Moonwalking, Spacewalking" NASA will announce at 2 p.m. EDT (1 p.m. CDT) Wednesday, June 1, the company, or companies, selected to move forward in developing the next generation of spacesuits for Artemis missions at the Moon and the International Space Station during an event at the agency’s Johnson Space Center in Houston. [May 26, 2022] Read more here: http://www.nasa.gov/press-release/nasa-to-pick-next-generation-spacesuits-for-moonwalking-spacewalking Open / Comment

2022-05-26 23:26:14 #BreakingNews from #Nasa: "NASA Supports Small Business Research to Power Future Exploration" NASA has selected hundreds of small businesses and dozens of research institutions to develop technology to help drive the future of space exploration, ranging from novel sensors and electronics to new types of software and cutting-edge materials. [May 26, 2022] Read more here: http://www.nasa.gov/press-release/nasa-supports-small-business-research-to-power-future-exploration Open / Comment

2022-05-26 17:36:31 #BreakingNews from #Nasa: "NASA to Discuss Status of Final Test Needed for Artemis I Moon Mission" NASA will hold a media teleconference at 12 p.m. EDT on Friday, May 27, to discuss the status of the next wet dress rehearsal test of the agency’s Space Launch System (SLS) rocket and Orion spacecraft at the agency’s Kennedy Space Center in Florida ahead of the uncrewed Artemis I lunar mission. [May 26, 2022] Read more here: http://www.nasa.gov/press-release/nasa-to-discuss-status-of-final-test-needed-for-artemis-i-moon-mission Open / Comment