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Since ancient times, aliens have always been a mystery to scientists. Do they really exist? And what if they really look like?Astronomy, Titanic 3D has to come back
Director James Cameron is forced to return some scenes from his cult movie Titanic after an astronomer complained that the stars in the sky were
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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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