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The heart of the blue whale has long been rumored to be about the size of a car. Its main circuit, according to some experts, is even large enough for people to swim through.Reveal the secret of a giant heart shape on Pluto
Scientists have recently revealed more information about the giant heart on Pluto that caused fever in 2015.
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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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