primordial black hole
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9 Things You Didn’t Know About Black Holes
The eerie giants of the cosmos keep their fair share of secrets.
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Astronomers Looking for One Black Hole May Have Found an Entire Squad
About 7,800 light-years away — within our galactic neighbourhood — is globular cluster NGC 6397, basically a wad of stars held together by gravity. That bunch of stars was previously thought to have an intermediate-sized black hole at its centre. But upon further inspection, a team from the Paris Institute of Astrophysics has determined that…