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We've known for some time that the Red Planet has frozen water and likely once hosted massive oceans, but it turns out Curiosity may not have to dig too deep to wet its whistle.
Dawn's first color map of Ceres shows the dwarf planet's mottled surface hints at a vibrant and active past.
Ceres comes into sharper focus as the Dawn mission settles into an up-close study of the dwarf planet's craters and mysterious bright spots.
Researchers are finding no obvious signs of life after digging through thousands of galaxy images in search of advanced civilizations.
They're massive, violent and full of lightning, and they only arrive every 20 to 30 years. What drives Saturn's storms may be the weight of water.
NASA scientists speculate seeping water may be causing some fascinating seasonal formations in the mountains of Mars.
NASA's plucky old rover Opportunity reached a new milestone by topping a marathon distance on Mars.
Scientists think that particles found by the Cosmic Dust Analyzer on the Cassini spacecraft could hint at a watery world where life could thrive on Enceladus, one of Saturn's moons.
The Dawn space probe will take a much closer look at Ceres' mystery lights now that it is in orbit around the protoplanet.
It's a real-life mystery cliffhanger. We've come up with a list of possible reasons a large crater on the biggest object in the asteroid belt looks lit up like a Christmas tree.