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Circling Saturn: Saturn is circled by its rings (seen nearly edge-on in this image), as well as by the moons Tethys (the large bright body near the lower right hand corner of this image) and Mimas (seen as a slight crescent against Saturn's disk above the rings, at about 4 o'clock). The shadows of the rings, each ringlet delicately recorded across Saturn's face, also circle around Saturn's south pole. Although the rings and larger moons of Saturn mostly orbit very near the planet's equatorial plane, this image shows that they do not all lie precisely in the orbital plane. Part of the reason that Mimas (246 miles, or 396 kilometers across) and Tethys (660 miles, or 1062 kilometers across) appear above and below the ring plane because their orbits are slightly inclined (about 1 to 1.5 degrees) relative to the rings. Credit: NASA/JPL-Caltech/Space Science Institute #nasa #space #saturn #cassini #moons #tethys #mimas #solarsystem #astronomy #science 6269E672-78E5-41E3-A30D-B08074F37E21; -
Supercomputer Simulation of Magnetic Field Loops on the Sun: Magnetic fields emerging from below the surface of the sun influence the solar wind—a stream of particles that blows continuously from the sun’s atmosphere through the solar system. Our researchers and university partners are using high-fidelity computer simulations to learn how these magnetic fields emerge, heat the sun’s outer atmosphere and produce sunspots and flares. This visualization shows magnetic field loops in a portion of the sun, with colors representing magnetic field strength from weak (blue) to strong (red). Image Credit: Robert Stein, Michigan State University; Timothy Sandstrom, NASA/Ames #nasa #computer #sun #solarwind #sunspot #supercomputer #solarsystem #science; -
Moon Transiting the Sun: The moon partially obscured the view of the sun from our Solar Dynamics Observatory, or SDO, on Nov. 22, 2014. This lunar transit was visible only from SDO's point of view. Image Credit: NASA/SDO #nasa #space #sun #sdo #moon #transit #science; -
Europa's Stunning Surface: The puzzling, fascinating surface of Jupiter’s icy moon Europa looms large in this newly-reprocessed color view, made from images taken by NASA's Galileo spacecraft in the late 1990s. This is the color view of Europa from Galileo that shows the largest portion of the moon's surface at the highest resolution. The view was previously released as a mosaic with lower resolution and strongly enhanced color. To create this new version, the images were assembled into a realistic color view of the surface that approximates how Europa would appear to the human eye. The scene shows the stunning diversity of Europa’s surface geology. Long, linear cracks and ridges crisscross the surface, interrupted by regions of disrupted terrain where the surface ice crust has been broken up and re-frozen into new patterns. Image Credit: NASA/JPL-Caltech/SETI Institute #nasa #space #europa #jupiter #galileo #science #moon #ice; -
And liftoff! The Soyuz TMA-15M rocket launches from the Baikonur Cosmodrome in Kazakhstan on Monday, Nov. 24, 2014, carrying Expedition 42 Soyuz Commander Anton Shkaplerov of the Russian Federal Space Agency (Roscosmos), Flight Engineer Terry Virts of NASA, and Flight Engineer Samantha Cristoforetti of the European Space Agency (ESA) into orbit to begin their five and a half month mission on the International Space Station. Photo Credit: NASA/Aubrey Gemignani #exp42 #iss #spacestation #space #nasa #launch #roscosmos #soyuz;
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Mixing Paints: Nature is an artist, and this time she seems to have let her paints swirl together a bit. What the viewer might perceive to be Saturn's surface is really just the tops of its uppermost cloud layers. Everything we see is the result of fluid dynamics. Astronomers study Saturn's cloud dynamics in part to test and improve our understanding of fluid flows. Hopefully, what we learn will be useful for understanding our own atmosphere and that of other planetary bodies. This view looks toward the sunlit side of the rings from about 25 degrees above the ringplane. The image was taken in red light with the Cassini spacecraft narrow-angle camera on Aug. 23, 2014. Credit: NASA/JPL-Caltech/Space Science Institute #nasa #space #saturn #planets #solarsystem #cassini #astronomy #science; -
Temperatures are dropping, the leaves are falling, and the countdown is on to the busiest time of year for air travel around the nation. The industry association Airlines for America predicts 24.6 million passengers will take off to visit friends and family during the upcoming Thanksgiving holiday weekend, up 1.5 percent from 2013. Sunday, Nov. 30, will be the busiest day of the year at U.S. airports. Even if you won’t be taking to the sky anytime soon, it’s a good bet something you're using today– your cell phone, flat-screen TV – or the holiday gifts you're buying online arrived as part of the billions of tons of cargo shipped on airplanes every year in the U.S. The holidays reinforce how much we rely on aviation. And thanks to advancements in aeronautics developed by NASA, today’s aviation industry is better equipped than ever to safely and efficiently transport all those passengers and packages to their destinations. Streamlined aircraft bodies, quieter jet engines, techniques for preventing icing, drag-reducing winglets, lightweight composite structures, and so much more are an everyday part of flying thanks to NASA research that traces its origins back to the earliest days of aviation. It’s the same story for the U.S. air traffic control system. Computer software tools produced by NASA to help reduce congestion from gate to gate, on the airport tarmac and along the highways in the sky, are in place at Federal Aviation Administration facilities all over the country. Learn more at http://www.nasa.gov/aero #flyNASA #thanksgiving #planes #flying #NASAaero #aviation #avgeek; -
Hubble Sees a Spiral in a Furnace: This Hubble image is a snapshot of NGC 986 — a barred spiral galaxy discovered in 1828 by James Dunlop. NGC 986 is found in the constellation of Fornax (The Furnace), located in the southern sky. NGC 986 is a bright, 11th-magnitude galaxy sitting around 56 million light-years away, and its golden center and barred swirling arms are clearly visible in this image. Barred spiral galaxies are spiral galaxies with a central bar-shaped structure composed of stars. NGC 986 has the characteristic S-shaped structure of this type of galactic morphology. Young blue stars can be seen dotted amongst the galaxy’s arms and the core of the galaxy is also aglow with star formation. To the top right of this image the stars appear a little fuzzy. This is because a gap in the Hubble data was filled in with data from ground-based telescopes. Although the view we see in this filled in patch is accurate, the resolution of the stars is no match for Hubble’s clear depiction of the spiral galaxy. Credit: NASA/ESA #nasa #space #astronomy #hst #telescope #galaxy #esa #science; -
Rocket Roll! The Soyuz TMA-15M spacecraft is rolled out to the launch pad by train on Friday, Nov. 21, 2014, at the Baikonur Cosmodrome in Kazakhstan. Launch of the Soyuz rocket is scheduled for Nov. 24 and will carry Expedition 42 Soyuz Commander Anton Shkaplerov of the Russian Federal Space Agency (Roscosmos), Flight Engineer Terry Virts of NASA , and Flight Engineer Samantha Cristoforetti of the European Space Agency into orbit to begin their five and a half month mission on the International Space Station. Image Credit: NASA/Aubrey Gemignani #nasa #space #spacestation #iss #isscrew #roscosmos #soyuz #launch #exp42; -
ThrowbackThursday: First Hubble Servicing Mission Astronaut Story Musgrave, anchored on the end of the Remote Manipulator System arm, prepares to be elevated to the top of the Hubble Space Telescope to install protective covers on the magnetometers. Astronaut Jeffrey Hoffman inside payload bay, assisted Musgrave with final servicing tasks on the telescope, wrapping up five days of spacewalks in December 1993. Image Credit: NASA #NASA #History #Hubble25 #Spacewalk #TBT #Throwbackthursday;
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Swift Gamma-Ray Burst Mission Marks Ten Years of Discovery On Nov. 20, 2004, NASA's Swift spacecraft lifted off aboard a Boeing Delta II rocket from Cape Canaveral Air Force Station, Fla., beginning its mission to study gamma-ray bursts and identify their origins. Gamma-ray bursts are the most luminous explosions in the cosmos. Most are thought to be triggered when the core of a massive star runs out of nuclear fuel, collapses under its own weight, and forms a black hole. The black hole then drives jets of particles that drill all the way through the collapsing star and erupt into space at nearly the speed of light. Seen here, astronomers at NASA and Pennsylvania State University used Swift to create the most detailed ultraviolet light surveys ever of the Large and Small Magellanic Clouds, the two closest major galaxies. Nearly a million ultraviolet sources appear in this mosaic of the Large Magellanic Cloud, which was assembled from 2,200 images taken by Swift's Ultraviolet/Optical Telescope (UVOT) and released on June 3, 2013. The 160-megapixel image required a cumulative exposure of 5.4 days. The image includes light from 1,600 to 3,300 angstroms -- UV wavelengths largely blocked by Earth's atmosphere -- and has an angular resolution of 2.5 arcseconds at full size. The Large Magellanic Cloud is about 14,000 light-years across. Viewing in the ultraviolet allows astronomers to suppress the light of normal stars like the sun, which are not very bright at such higher energies, and provides a clearer picture of the hottest stars and star-formation regions. No telescope other than UVOT can produce such high-resolution wide-field multicolor surveys in the ultraviolet. Image Credit: NASA/Swift/S. Immler (Goddard) and M. Siegel (Penn State); -
Five hundred million years after the sun was born, Jupiter’s massive gravity disrupts countless asteroids and comets. These hammer down on the inner planets. Did this impact deliver water and organics? The key ingredients to life? The Origins Spectral Interpretation Resource Identification Security -- Regolith Explorer spacecraft (OSIRIS-REx) will travel to a near-Earth asteroid, called Bennu, and bring a sample back to Earth for study. The mission will help scientists investigate how planets formed and how life began, as well as improve our understanding of asteroids that could impact Earth. OSIRIS-REx is scheduled for launch in late 2016. As planned, the spacecraft will reach its asteroid target in 2018 and return a sample to Earth in 2023.; -
Supernova Remnant: A long observation with Chandra of the supernova remnant MSH 11-62 reveals an irregular shell of hot gas, shown in red, surrounding an extended nebula of high energy X-rays, shown in blue. Even though scientists have yet to detect any pulsations from the central object within MSH 11-62, the structure around it has many of the same characteristics as other pulsar wind nebulas. The reverse shock and other, secondary shocks within MSH 11-62 appear to have begun to crush the pulsar wind nebula, possibly contributing to its elongated shape. (Note: the orientation of this image has been rotated by 24 degrees so that north is pointed to the upper left.) Image credit: NASA/CXC/SAO/P. Slane et al. #nasa #chandra #xray#astronomy #space #nebula #science #supernova; -
As icy cold Canadian air settled over the eastern two-thirds of the U.S. bringing snow and bitter cold, NOAA's GOES-East satellite captured this infrared view of what looks like a frozen blanket over the region. NOAA's GOES-East satellite provides visible and infrared images over the eastern U.S. and the Atlantic Ocean from its fixed orbit in space. In an infrared image taken on Nov. 18 at 12:30 UTC (7:30 a.m. EST), the cold air over the eastern and central U.S. appears to look like a blanket of white, but it's not all snow. Infrared data shows temperature, so although the eastern two-thirds of the U.S. appears to appear is if snow covers the ground, the blanket is in fact cold clouds. However, snow does lie under that blanket in the Upper Midwest, Ohio Valley, and Canada, where it will continue in those areas through Thursday, Nov. 20. To create the image, NASA/NOAA's GOES Project takes the cloud data from NOAA's GOES-East satellite and overlays it on a true-color image of land and ocean created by data from the Moderate Resolution Imaging Spectroradiometer, or MODIS, instrument that flies aboard NASA's Aqua and Terra satellites. Together, those data created the entire picture of the storm and show its movement. After the storm system passes, the snow on the ground becomes visible. GOES satellites provide the kind of continuous monitoring necessary for intensive data analysis. Geostationary describes an orbit in which a satellite is always in the same position with respect to the rotating Earth. This allows GOES to hover continuously over one position on Earth's surface, appearing stationary. As a result, GOES provide a constant vigil for the atmospheric "triggers" for severe weather conditions such as tornadoes, flash floods, hail storms and hurricanes. Image credit: NASA/NOAA GOES Project, Dennis Chesters; -
Temperatures are dropping, the leaves are falling, and the countdown is on to the busiest time of year for air travel around the nation. Even if you won’t be taking to the sky anytime soon, it’s a good bet something you're using today– your cell phone, flat-screen TV – or the holiday gifts you're buying online arrived as part of the billions of tons of cargo shipped on airplanes every year in the U.S. The holidays reinforce how much we rely on aviation. And thanks to advancements in aeronautics developed by NASA, today’s aviation industry is better equipped than ever to safely and efficiently transport all those passengers and packages to their destinations. Streamlined aircraft bodies, quieter jet engines, techniques for preventing icing, drag-reducing winglets, lightweight composite structures, and so much more are an everyday part of flying thanks to NASA research that traces its origins back to the earliest days of aviation. It’s the same story for the U.S. air traffic control system. Computer software tools produced by NASA to help reduce congestion from gate to gate, on the airport tarmac and along the highways in the sky, are in place at Federal Aviation Administration facilities all over the country. Image credit: NASA #flyNASA #NASAaero #aviation #avchat #flying #airplanes #airtraffic #flights #airport #nasa;
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