Thursday, 5 March 2015

Mars: The planet that lost an ocean's worth of water

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About four billion years ago, the young planet would have had enough water to cover its entire surface in a liquid layer about 140 meters deep, but it is more likely that the liquid would have pooled to form an ocean occupying almost half of Mars’s northern hemisphere, and in some regions reaching depths greater than 1.6 kilometers.

via Science Daily

Zazzle Space Exploration market place

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