A strange black hole is making scientists scratch their heads.

Astronomers observed flashes of X-rays coming from a supermassive black hole at a steadily increasing clip. The source could be the core of a dead star that's teetering at the black hole's edge.

International teams of astronomers monitoring a supermassive black hole in the heart of a distant galaxy have detected ...

Scientists found the elusive black hole with a mass 10,000 times that of the Sun after it gave off the powerful X-ray flare. Using NASA's Chandra X-ray telescope, researchers have observed two ...

NASA's X-ray space telescope Chandra spotted the cosmic collision from the supermassive black hole at the heart of the ... times the distance between the sun and the closest star to the solar ...

In a newly released series of images, scientists used Hubble ... similar to how the moon obscures the sun during a total solar eclipse. Related: Black hole paradox that stumped Stephen Hawking ...