The oceans that once covered Mars may have formed somewhere around 3.7 billion years ago, even earlier than previously thought, according to UC Berkeley scientists.
The findings, published in the journal Nature, highlight a potential link between the birth of Martian oceans and the rise and fall of its volcanic activity.
Billions of years ago, the Red Planet didn't look so different from our own blue-green world, scientists say. It could have had a thick atmosphere, puffy clouds, even lakes and oceans. That's why researchers wonder whether life could have existed on our now-cold, dry neighbor.
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