Ancient

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Finding shells on Mars
Space science

Finding shells on Mars

The scalloped image of the Martian surface, captured by NASA's Curiosity, proved the red planet's ocean once lived.

December 17, 2018
Super 50m tsunami can sweep Mars
Space science

Super 50m tsunami can sweep Mars

Tsunami waves 50 meters high can land on the mainland on Mars about 3.4 million years ago after two asteroids collided.

December 17, 2018