Dubbed HR 6819, the black hole is invisible. The star system was only spotted after two companion stars provided researchers with information on its whereabouts. It can be seen on a clear night in the Southern Hemisphere without the use of a binocular or telescope, making it the first black hole to be seen without tools.
Though the black hole itself is invisible (as all black holes are) and does not have violent interactions with objects around it, the researchers are nonetheless certain it's there.
“An invisible object with a mass at least 4 times that of the Sun can only be a black hole,” concluded the study's lead author, Thomas Rivinius.
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Though the black hole itself is invisible (as all black holes are) and does not have violent interactions with objects around it, the researchers are nonetheless certain it's there.
“An invisible object with a mass at least 4 times that of the Sun can only be a black hole,” concluded the study's lead author, Thomas Rivinius.
Black hole, 1,000 light-years from Earth, discovered
Researchers have discovered a black hole 1,000 light-years from Earth, the closest one known so far.
