An ancient ocean on Mars (IMAGE)

University of California - Berkeley

An ancient ocean on Mars

Caption

A hypothetical picture of Mars 3.6 billion years ago, when an ocean may have covered nearly half the planet. The blue areas show the depth of the ocean filled to the shoreline level of the ancient, now-gone sea, dubbed Deuteronilus. The orange star represents the landing site of the Chinese rover Zhurong. The yellow star is the site of NASA's Perseverance rover, which landed a few months before Zhurong. 

Credit

Robert Citron

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