Science

A megatsunami swept across Mars after a massive asteroid hit the red planet

A megatsunami swept across Mars after a massive asteroid hit the red planet

A Martian megatsunami, a giant killer wave that could have reached more than 80 stories high, may have swept through the Red Planet after a cosmic impact similar to the one that likely ended Earth’s age of dinosaurs, according to a new study

Although the surface of March is now cold and dry, a large body of evidence suggests that an ocean of water covered the Red Planet billions of years ago. Prior research found signs that could have been caused by two meteorite strikes a couple of megatsunamis (opens in a new tab) about 3.4 billion years ago. The oldest tsunami inundated about 309,000 square miles (800,000 square kilometers), while the most recent one drowned a region of about 386,000 square miles (1 million square km).





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