Astronomers have discovered that a star system believed to host the closest black hole to Earth is actually comprised ... that rather than a triple system, HD 6819 is actually a "vampire" two ...

A 15-year search reveals the first evidence of a cosmic 'gravitational wave background ... black holes billions of times more massive than the sun requires a detector much larger than the size of ...

The closest known black hole may have been found a cosmic stone’s throw from Earth, just 1500 light years away. Called Gaia BH1, it is estimated to be about 10 times the mass of our sun.

Astronomers have found the closest black hole yet at just 1000 light years from Earth, close enough to see the stars that orbit it without a telescope. Marianne Heida at the European Southern ...

Using 16 years of data from NASA's gamma-ray detecting Fermi spacecraft, astronomers have discovered that "microquasars," systems in which a black hole ... bombarding Earth. The mechanism for ...