Black holes

An ultraluminous nova in a nearby galaxy offers a glimpse into the mysterious workings of a rare stellar duo.

The first "black hole triple" system, consisting of a black hole hungrily feeding on a companion star orbited by a more distant star, hints at a gentle formation process without supernova explosions.

The James Webb Space Telescope has discovered lonely quasars in the early universe, with "empty larders" that defy theories surrounding their growth to monster sizes.

Stellar-mass and supermassive black hole coronas have some similarities, and this is great news for black hole physicists.

Space mysteries Black hole mergers are beautiful — and some of the most violent events in the cosmos. Here's how the process unfolds.

NASA's Chandra X-ray space telescope has spotted the cosmic serial killer that, like Michael Myers, is back for a sequel, killing a star and attacking a second star with its remains.

The James Webb Space Telescope has spotted the earliest supermassive black hole-driven quasar wind ever seen, pushing away matter at 6,000 times the speed of sound and killing its host galaxy.

Hubble Space Telescope observations suggest supermassive black hole jets double the frequency of nova explosions. But how?

Could dark matter decay have given massive clouds of hydrogen gas the time they needed to birth supermassive black holes seen by the James Webb Space Telescope?

Using the Dark Energy Camera, astronomers discovered that black-hole-powered quasars in the early universe lived in dense neighborhoods, but were "bad neighbors."