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/ / / Raging rivers wider than the Mississippi roared across Mars eons ago

Raging rivers wider than the Mississippi roared across Mars eons ago

Mars wasn't always the red dust ball that it is today. Billions of years ago, hundreds of huge rivers of water flowed across the planet.

      
 
 


from USATODAY - World Top Stories https://ift.tt/2uu4m8h
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