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Damp spots found in supposedly dry Martian tropics
Damp spots found in supposedly dry Martian tropics - space - 10 December 2013 - New Scientist
Dark streaks on sun-warmed slopes hint at unexpected dampness in the Martian tropics. If confirmed, the discovery would mean that water on Mars is more widespread than imagined – possibly adding a wrinkle to efforts to protect Mars from contamination with earthly life forms.
Previous images taken from orbit showed similar streaks that appear to be moving down slopes in the planet's southern mid-latitudes. These dark spots appeared in sunny areas in late spring and summer then faded away, leading scientists to conclude that briny ice under the surface was melting, and that liquid water was seeping up and evaporating.
Damp spots found in supposedly dry Martian tropics - space - 10 December 2013 - New Scientist