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Of Liquid Water and Martian Tsunamis

Does anyone remember the movie "Deep Impact" about a doomsday asteroid heading toward Earth? Spoiler alert: Humanity survives, but not without severe damage due to a fairly large chunk of rock that hits the Atlantic Ocean. The resulting tsunami sends a giant wave all the way to the foot of the Appalachian mountains. Today, scientists from Cornell University published research suggesting events like this happened on Mars billions of years ago. The red, wet planet Yes,...

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