There is Water Underground


Are dry ideas of Mars all wet?  It's starting to look that way.

As recently as even 2004, it was believed that possibly in the past, but certainly now, Mars was, or is, a bone-dry planet. Water could not have existed in any sufficient amount to sustain life, at least not in any recent times.

Various mapping missions though, showed significant traces of water-ice beneath the surface.  As early as 2002, Mars Odyssey showed traces of ice underground, perhaps even a large amount.  But we still hadn't detected anything at the surface to confirm these traces.

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