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EntertainmentSuper flood marks stretch over 3,000km on Mars
Scientists discovered traces of a massive flood on Mars with a trench system stretching about 3,000 km.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.
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Can carp live 10 years in a tank without feeding?
Why do Italy and Switzerland have to redraw the border?
Japanese bullet train accident-free for 60 years
The world's most crowded apartment building: Can accommodate up to 30,000 people, the view inside is overwhelming
World's oldest wine jar contains cremated human bones
America catches strange signal from 1.3 billion light years away from Earth
Two black holes closest to Earth discovered, of a kind never seen before
Solar sails help spacecraft reach Mars in 26 days
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