New clues about early atmosphere on Mars suggest a wet planet capable of supporting life

New research suggests Mars was born wet, with a dense atmosphere allowing warm-to-hot oceans for millions of years. Researchers developed the first model of the evolution of the Martian atmosphere that links the high temperatures associated with Mars’s formation in a molten state through to the formation of the first oceans and atmosphere. Deuterium prefers partitioning into the water molecule relative to molecular hydrogen (H 2 ) which preferentially takes up ordinary hydrogen and escapes from the top of the atmosphere of Mars.

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