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Valley Networks Suggest Ancient Snowfall on Mars
July 23, 2013 — Researchers have shown that some Martian valleys appear to have been caused by runoff from orographic precipitation -- moisture carried part of the way up a mountain and deposited on the slopes. The ... > full story -
New Record for Cosmic X-Ray Sightings: Exploring Extreme Universe With Rich New Resource
July 23, 2013 — Scientists have set a new record for cosmic X-ray sources ever sighted -- creating an unprecedented cosmic X-ray catalog that will provide a valuable resource allowing astronomers to explore the ... > full story -
NASA Releases Images of Earth by Two Interplanetary Spacecraft
July 22, 2013 — Color and black-and-white images of Earth taken by two NASA interplanetary spacecraft on July 19 show our planet and its moon as bright beacons from millions of miles away in space. NASA's Cassini ... > full story -
Large Coronal Hole Near the Sun's North Pole
July 19, 2013 — Astronomers captured an image of a gigantic coronal hole hovering over the sun's north pole on July 18, 2013, at 9:06 a.m. EDT. Coronal holes are dark, low density regions of the sun's outermost ... > full story -
How Mars' Atmosphere Got So Thin: Reports Detail Curiosity Clues to Atmosphere's Past
July 18, 2013 — A pair of new papers report measurements of the Martian atmosphere's composition by NASA's Curiosity rover, providing evidence about loss of much of Mars' original ... > full story -
Snow in an Infant Solar System: A Frosty Landmark for Planet and Comet Formation
July 18, 2013 — A snow line has been imaged in a far-off infant solar system for the very first time. The snow line, located in the disc around the Sun-like star TW Hydrae, promises to tell us more about the ... > full story -
MAVEN Spectrometer Opens Window to Red Planet’s Past
July 18, 2013 — When NASA's MAVEN mission begins its journey to the Red Planet later this year, it will be equipped with a special instrument to take the planet back in ... > full story -
Hubble Shows Link Between Stars' Ages and Their Orbits in Dense Cluster
July 18, 2013 — Astronomers using NASA's Hubble Space Telescope have determined the orbital motion of two distinct populations of stars in an ancient globular star cluster, offering proof they formed at different ... > full story -
NASA Interplanetary Probes to Take Pictures of Earth
July 18, 2013 — Two NASA spacecraft, one studying the Saturn system, the other observing Mercury, are maneuvering into place to take pictures of Earth on July 19 and ... > full story -
Slow Bow Shock Ahead of the Sun's Heliosphere Predicted
July 18, 2013 — A new study indicates that a bow shock (a dynamic boundary between sun’s heliosphere and the interstellar medium) is highly likely. These findings challenge recent predictions that no such bow ... > full story
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