We were as excited as anyone when MARSIS (the Mars Advanced Radar for Subsurface and Ionosphere Sounding) experiment announced there was possibly liquid water under the southern polar ice cap. If ...
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Why the lack of water on Mars is so mysterious
Planetary scientists agree that Mars used to have liquid water on its surface and a water-rich atmosphere, far different from its current arid state. But an accounting of all the sources of water to ...
You’ve probably followed the Mars rover missions on and off for years, watching those red-dust landscapes scroll across your TV screen and wondering: Could something have lived there once? Now, after ...
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