An artist’s impression of the Cygnus X-1 system, with the black hole appearing in the center and its companion star on the left. New measurements from Cygnus X-1, reported Nov. 3 in the journal ...

Black holes aren't alive, but it turns out that they can have a heartbeat — if they're consuming enormous amounts of gas. And new research has discovered just how that heartbeat works. When black ...

Researchers’ recent observations of a stellar-mass black hole called Cygnus X-1 reveal new details about the configuration of extremely hot matter in the region immediately surrounding the black hole.

The balloon-borne telescope XL-Calibur was launched on a six-day flight from the Swedish Space Corporation's Esrange Space Center in July 2024. During that flight, the telescope took measurements from ...

CC0 Usage Conditions ApplyClick for more information. Astronomers are confident the Cygnus X-1 system contains a black hole, and with these latest studies they have remarkably precise values of its ...

A black hole is a region of spacetime where gravity is so intense that nothing, no matter how much energy it has, can escape. Inside the event horizon, gravity supersedes all other forces of nature.