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Nov 5, 2015 01:28 PM ET // Ian O'Neill
By combining high-resolution observations of Mars dune ripples and comparing them with sand dunes on Earth, scientists are beginning to understand how surface winds influence the Red Planet.
Nov 3, 2015 07:00 AM ET // Larry O'Hanlon
As if Mars' thin, frigid, dry air wasn't harsh enough, now scientists have found new evidence of acid fog altering the rocks near the Spirit Rover.
Oct 19, 2015 12:34 PM ET // Ian O'Neill
Like a woodworm-infested log, new photos from NASA's New Horizons mission of dwarf planet Pluto have revealed a pockmarked terrain that is as puzzling as it is beautiful.
Oct 16, 2015 02:45 PM ET // Elizabeth Howell
After three Earth years on Mars, the Curiosity rover has found extensive evidence of past liquid water in Gale Crater. Check out some of the highlights.
Oct 13, 2015 11:00 AM ET // Amanda Onion
A babbling river on Mars may have pushed pebbles along for some 30 miles -- according to new analysis of images taken by the Curiosity rover.
Oct 12, 2015 07:00 AM ET // Elizabeth Howell
How pretty pictures from the Apollo landings helped NASA do real science on the moon.
Sep 28, 2015 08:30 PM ET // Ian O'Neill
Once again the world is abuzz about water on Mars -- what's the fuss about this time?
Sep 15, 2015 08:32 AM ET // Elizabeth Palermo, LiveScience
Newly found evidence suggests that two meteors smacked into Earth at the same time, about 458 million years ago.
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