Published
Mars bears ample evidence of a wet past, but scientists debate just how much water the planet has lost over time. Now, isotopic measurements by researchers at NASA’s Goddard Space Flight Center reveal that an ocean covered approximately twenty percent of early Mars.
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This video is public domain and can be downloaded at:
Like our videos? Subscribe to NASA's Goddard Shorts HD podcast:
Or find NASA Goddard Space Flight Center on facebook:
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