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The Tsunamis of Mars

The Red Planet was wet and wild.

Some 3.5 billion years ago, a meteor splashed into an ocean on northern Mars, creating a wall of water 400 feet high. The tsunami crashed down — in
seemingly slow motion, due to the low gravity — and then rushed across hundreds of thousands of square miles of plains and up into highlands. It happened
again a few million years later, except with a noticeably icier ocean. In a Scientific Reports paper published online in May, scientists said they had found evidence of the two events.


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