Smaller black holes tend to attract less material, making them naturally dimmer. Chandra would miss many of these faint objects.

In a patch of sky about 1. 2 billion light-years from Earth, astronomers have found a cosmic rarity: three galaxies caught in ...

Astronomers have confirmed the first known triple system in which all three galaxies host actively feeding, radio-bright ...

Supermassive black holes have been found at the center of almost every galaxy, sucking up anything unlucky to fall into its ...

A supermassive black hole in the spiral galaxy NGC 3783 just delivered an X-ray surprise that astronomers have never watched ...

New XRISM X-ray observations reveal details of gas near a supermassive black hole in galaxy MCG–6-30-15, helping scientists better measure black hole spin and behavior ...

A new image of M87 shows and confirms for the first time the feeding ring and jet of its supermassive black hole.

Three merging galaxies host three active black holes, offering rare insight into galaxy and black hole growth.

Astronomers were puzzled by a black hole around 50 million times the mass of the sun with no stars, spotted by the James Webb ...

The discovery of a hidden supermassive black hole inside an ancient galaxy suggests that some of our universe's most extreme objects could be invisible unless observed in infrared wavelengths, James ...

Astronomers have spotted the most massive known stellar black hole in the Milky Way galaxy after detecting an unusual wobble in space. The so-called "sleeping giant," named Gaia BH3, has a mass that ...

Scientists once thought this tiny galaxy was held together by dark matter. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. An unexpected monster ...