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Artist concept of an auroral display on a brown dwarf: Mysterious objects called brown dwarfs are sometimes called "failed stars." They are too small to fuse hydrogen in their cores, the way most stars do, but also too large to be classified as planets. But a new study in the journal Nature suggests they succeed in creating powerful auroral displays, similar to the kind seen around the magnetic poles on Earth. If you could see an aurora on a brown dwarf, it would be a million times brighter than an aurora on Earth. Credits: Chuck Carter and Gregg Hallinan/Caltech (Artist Concept) #nasa #star #aurora #nasabeyond #science @nasajpl; -
Rocks Here Sequester Some of Mars' Early Atmosphere This view combines information from two instruments on NASA's Mars Reconnaissance Orbiter to map color-coded composition over the shape of the ground in a small portion of the Nili Fossae plains region of Mars' northern hemisphere. This site is part of the largest known carbonate-rich deposit on Mars. In the color coding used for this map, green indicates a carbonate-rich composition, brown indicates olivine-rich sands, and purple indicates basaltic composition. Carbon dioxide from the atmosphere on early Mars reacted with surface rocks to form carbonate, thinning the atmosphere by sequestering the carbon in the rocks. Image credit: NASA/JPL-Caltech/JHUAPL/Univ. of Arizona #mars #surface #planets #solarsystem #nasa #space #mro #redplanet #nofilter; -
The arrangement of the spiral arms in the galaxy Messier 63, seen here in an image from the Hubble Space Telescope, recall the pattern at the center of a sunflower. So the nickname for this cosmic object — the Sunflower Galaxy — is no coincidence. Galactic arms, sunflowers and whirlpools are only a few examples of nature’s apparent preference for spirals. For galaxies like Messier 63 the winding arms shine bright because of the presence of recently formed, blue–white giant stars and clusters, readily seen in this Hubble image. Credit: ESA/Hubble & NASA #nasa #hubble #space #sunflower #galaxy; -
A small, but complex mass of solar material gyrated and spun about over the course of 40 hours above the surface of the sun on Sept. 1-3, 2015. It was stretched and pulled back and forth by powerful magnetic forces in this sequence captured by our Solar Dynamics Observatory, or SDO. The temperature of the ionized iron particles observed in this extreme ultraviolet wavelength of light was about 5 million degrees Fahrenheit. SDO captures imagery in many wavelengths, each of which represents different temperatures of material, and each of which highlights different events on the sun. Each wavelength is typically colorized in a pre-assigned color. Wavelengths of 335 Angstroms, such as are represented in this picture, are colorized in blue. Credit: NASA/SDO #nasa #sun #sdo #solarsystem #nasabeyond #space #science; -
New close-up images of Pluto reveal a bewildering variety of surface features that have scientists reeling because of their range and complexity. This synthetic perspective view of Pluto, based on the latest high-resolution images to be downlinked from our New Horizons spacecraft, shows what you would see if you were approximately 1,100 miles (1,800 kilometers) above Pluto's equatorial area, looking northeast over the dark, cratered, informally named Cthulhu Regio toward the bright, smooth, expanse of icy plains informally called Sputnik Planum. The entire expanse of terrain seen in this image is 1,100 miles (1,800 kilometers) across. The images were taken as New Horizons flew past Pluto on July 14, 2015, from a distance of 50,000 miles (80,000 kilometers). Credits: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute #nasa #pluto #plutoflyby #newhorizons#solarsystem #nasabeyond #science;
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Mysterious bright spots are seen here in greater detail. This image, made using images taken by our Dawn spacecraft, shows Occator crater on dwarf planet Ceres, home to a collection of intriguing bright spots. The bright spots are much brighter than the rest of Ceres' surface, and tend to appear overexposed in most images. This view is a composite of two images of Occator: one using a short exposure that captures the detail in the bright spots, and one where the background surface is captured at normal exposure. Image credit: NASA/JPL-Caltech/UCLA/MPS/DLR/IDA #nasa #ceres #planets #nasadawn #dawn #solarsystem #space #nasabeyond #science; -
Before drifting off to sleep on Saturday, Sept. 5, astronaut Scott Kelly (@stationcdrkelly) aboard the International Space Station posted this image and wrote, "#goodnight #Earth! Make me proud and I'll try and do the same. #YearInSpace." Kelly is living and working off the Earth, for the Earth aboard the station for a yearlong mission. Traveling the world about 250 miles above the Earth, and at 17,500 mph, he circumnavigates the globe more than a dozen times a day. Image Credit: NASA #nasa #space #iss #spacestation #sun; -
This composite image made from five frames shows the International Space Station, with a crew of six onboard, is seen in silhouette as it transits the sun at roughly five miles per second, Sunday, Sept. 6, 2015, Shenandoah National Park, Front Royal, VA. Onboard are; NASA astronauts Scott Kelly (stationcdrkelly) and Kjell Lindgren: Russian Cosmonauts Gennady Padalka, Mikhail Kornienko, Oleg Kononenko, Sergey Volkov, Japanese astronaut Kimiya Yui, Danish Astronaut Andreas Mogensen, and Kazakhstan Cosmonaut Aidyn Aimbetov. Photo Credit: (NASA/Bill Ingalls) #nasa #space #iss #spacestation #earth #yearinspace; -
Summer Vacation: NASA astronaut Scott Kelly and his Russian crewmates Gennady Padalka and Mikhail (Misha) Kornienko took a road trip of sorts from the International Space Station after a little more than five months of their stay. They left their orbital home for a 20-minute get away to move their spacecraft. They undocked their Soyuz that brought them to the space station back in late March from one International Space Station module to another, clearing a module for the arrival of a new crew. It's the first time in nearly two years since nine crew members are aboard the station simultaneously. It's a full house. Credit: NASA #nasa #iss #isscrew #space #spacestation #soyuz #earth #yearinspace; -
Peering into the Heart of a Galactic Maelstrom: This Hubble Space Telescope image shows a spiral galaxy just over 35 million light-years away in the constellation of Leo (The Lion). It is of about the same mass and size as the Milky Way. The galaxy resembles a giant maelstrom of glowing gas, rippled with dark dust that swirls inwards towards the nucleus. Messier 96 is a very asymmetric galaxy; its dust and gas are unevenly spread throughout its weak spiral arms, and its core is not exactly at the galactic center. Its arms are also asymmetrical, thought to have been influenced by the gravitational pull of other galaxies within the same group. Image credit: ESA/Hubble & NASA and the LEGUS Team, Acknowledgement: R. Gendler #nasa #hubble #hubble25 #hst #space #galaxy #astronomy #milkyway #nasabeyond #science;
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At Saturn, One of These Rings is not like the Others: When the sun set on Saturn's rings in August 2009, scientists on our Cassini mission were watching closely. It was the equinox -- one of two times in the Saturnian year when the sun illuminates the planet's enormous ring system edge-on. The event provided an extraordinary opportunity for the orbiting Cassini spacecraft to observe short-lived changes in the rings that reveal details about their nature. In a recent study, a team of Cassini scientists reported that one section of the rings appears to have been running a slight fever during equinox. The higher-than-expected temperature provided a unique window into the interior structure of ring particles not usually available to scientists. This result is fascinating because it suggests that the middle of Saturn's A ring may be much younger than the rest of the rings. Other parts of the rings may be as old as Saturn itself. Credits: NASA/JPL/Space Science Institute #nasa #cassini #saturn #planets #space #solarsystem #rings #nasabeyond #science; -
Good Night From Space: Earth's thin atmosphere stands out against the blackness of space in this photo shared on Aug. 31, 2015, by NASA astronaut Scott Kelly (@stationcdrkelly) on board the International Space Station. The station's solar panels can be seen in darkness at the right of the image. Kelly, in the midst of a year-long stay on the orbital outpost, shared the photo in a tweet: "Day 157. At the end of the day, #sunrise will come again. Good night from @ISS! #YearInSpace." Image Credit: NASA #nasa #space #iss #spacestation #earth #yearinspace; -
The Pluto system as NASA’s New Horizons spacecraft saw it in July 2015. This animation, made with real images taken by New Horizons, begins with Pluto flying in for its close-up on July 14; we then pass behind Pluto and see the atmosphere glow in sunlight before the sun passes behind Charon. The movie ends with New Horizons’ departure, looking back on each body as thin crescents. Credit: NASA/JHUAPL/SwRI #nasa #pluto #plutoflyby #newhorizons #solarsystem #nasabeyond #science; -
Wings of a Butterfly: The cosmic butterfly is called the Twin Jet Nebula. The glowing and expanding shells of gas clearly visible in this image represent the final stages of life for an old star of low to intermediate mass. The star has not only ejected its outer layers, but the exposed remnant core is now illuminating these layers - resulting in a spectacular light show. The characteristic shape of the wings of the Twin Jet Nebula is most likely caused by the motion of two central stars around each other. It is believed that as the dying star and white dwarf orbit around their common center of mass, the ejected gas from the dying star is pulled into two lobes rather than expanding as a uniform sphere. Meanwhile the nebula's wings are still growing and, by measuring their expansion, astronomers have calculated that the nebula was created only 1,200 years ago. Credits: ESA/Hubble & NASA, Acknowledgement: Judy Schmidt #nasa #hubble #nasabeyond #hubble25 #hst #astronomy #butterfly #nebula #science; -
Signs of Katrina Linger in the Marshes: Ten years after making landfall, scars from Hurricane Katrina still linger. And not just in the blighted houses that mar some neighborhoods. The marshes and swamps that buffer New Orleans from the Gulf of Mexico still show evidence of Katrine's wrath. The wetlands surrounding Delacroix, a fishing town to the southeast of New Orleans, were some of the hardest hit by the hurricane. Pounding surf, driving winds, and a potent storm surge transformed the marshes by picking apart mats of dead grass, stirring up and disbursing soft underlying sediments, scouring several new channels, and depositing leftover sediment and debris in new areas. Katrina delivered a massive surge of water that dramatically enlarged lakes, including Lake Lery and Petit Lake. It also scoured new channels and widened canals in ways that eliminated large amounts of marshland. As seen in the 2015 image, flood-damaged vegetation has returned to its normal color, but the enlarged waterways have persisted. NASA Earth Observatory images by Jesse Allen, using Landsat data from the U.S. Geological Survey. #nasa #hurricane #katrina #space #earth #earthrightnow #science #neworleans #hurricanekatrina #katrina10 #katrina10yearslater;
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