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EntertainmentA death hole appeared in the middle of the galaxy's 'heart' containing Earth
Data from NASA's Chandra X-ray Observatory reveals Sagittarius A* -Appeared more mysterious craters in Siberia
A new 20-meter-diameter crater was discovered in Russia's Siberia region, causing concern for local people.Video: Mysterious crater in Siberia
A new large crater was discovered in Siberia, Russia, in the area called
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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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