INSUBCONTINENT EXCLUSIVE:
roughly 3.5 billion years ago
During these dry periods, Mars was almost as cold as it is today
But once in a while, small areas with liquid water appeared on the Martian surface like oases amidst an otherwise unwelcoming desert
It was a sterile planet with flickering, transient habitable spots with water coming from melted snow.This rather bleak picture of the
(rather than just survive) on ancient Mars
And, perhaps more critically, whether hypothetical life that originated even before the salts era, when the planet was warm and wet, could
