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Ultraviolet ray sky surveys have found super-giant black holes that are rapidly increasing in size from the early universe.
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The Mystery of Biology: Why Can't We Build Airplanes With Wings Like Dragonflies?
Top 10 geniuses with the greatest inventions in history
The phenomenon of 'moving borders' changes the shape of countries
Decoding the naming of streets in Hanoi: Surprising truths not everyone knows!
The Mystery and Engineering Feat of Albano Emissary: The 2,000-Year-Old Roman Tunnel
Great ways to relieve stress and beat boredom
The snow-white mountain stands tall in the middle of the green plain: Unexpectedly, it is a giant garbage dump!
Giant pyramid 'appears' in the middle of the highway in Mexico
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