It’s possible that a huge ocean covered one-third of the surface of Mars some 3.5 billion years ago, a finding likely to reignite an old argument about that amount of water on the red planet, according to a new report.
The study by the University of Colorado at Boulder is the first to integrate multiple data sets of river deltas, valley networks and topography from a cadre of NASA and European Space Agency orbiting missions of Mars dating back to 2001, the researchers claim.
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