Gravitational waves spotted by LIGO reveal two black holes, 140 and 100 times the mass of the sun, merged to become a 225 solar mass behemoth.

But in the past two decades, new types of black holes have been seen and astronomers are beginning to understand how they ...

The image of supermassive black hole Sagittarius A * was created using data from the Event Horizon Telescope Collaboration. At the same time several telescopes, including the Chandra X-ray Observatory ...

"Theories involving substantial formation of stars prior to or together with the black hole formation and growth are very ...

Chandra X-ray Observatory and X-ray Polarimetry Explorer (IXPE) imagery of the Milky Way's core and supermassive black hole Sagittarius A* has been sonified by SYSTEM Sounds. Credit: ...