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Tuesday, July 29, 2014

NASA

Image - NASAs Mars Spacecraft Maneuvers to Prepare for Close Comet Flyby

NASA's Mars Spacecraft Maneuvers to Prepare for Close Comet ...

NASA is taking steps to protect its Mars orbiters, while preserving opportunities to gather valuable scientific data, as Comet C/2013 A1 Siding Spring heads toward a close flyby of Mars on Oct. 19. The comet’s nucleus will miss Mars by about 82,000 miles (132,000 kilometers), shedding material hurtling at about 35 miles (56 kilometers) per second, relative to ...
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Image - Astronomers Discover Transiting Exoplanet with Longest Known Year

Astronomers Discover Transiting Exoplanet with Longest Known...

Astronomers using NASA Kepler data have discovered a transiting exoplanet with the longest known year. Kepler-421b orbits its star once every 704 days. In comparison, Mars orbits our sun once every 780 days. Most of the more than 1,800 confirmed exoplanets discovered to date are much closer to their stars and have much shorter orbital periods. "Finding Kepler-4...
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