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Rivers on Mars Flowed for More Than a Billion Years

The ancient climate of is a mystery to scientists. Even all we’ve learned about Mars, it’s still to explain how lakes and rivers existed.

from https://www.universetoday.com/141879/rivers-on-mars-flowed--more-than-a-billion-/
https://www.universetoday.com/wp-content/uploads/15/04/NASA_martianocean.jpg

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