Colossal ‘planet killer’ asteroid sparked mega-tsunami on Mars, and now we know where it landed – Help US

An artist’s interpretation of a killer asteroid exploding on impact with the Red Planet. (Image credit: Shutterstock)

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A newly discovered impact crater on Mars was likely left by an enormous asteroid that slammed into the Red Planet around 3.4 billion years ago and may have triggered an 800-foot-tall “mega-tsunami.” The colossal explosion was similar to the asteroid impact on Earth that wiped out the nonavian dinosaurs, a new study shows. 

From about 3.5 billion to 3 billion years ago, Mars was covered by vast, shallow oceans. During that time, one of these oceans, which once covered Mars’ northern lowlands (Vastitas Borealis), experienced multiple mega-tsunamis when asteroids slammed into the ancient body of water, according to NASA (opens in new tab)

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