Tag Archive for 'Cygnus X-1'

An artist’s impression of the Cygnus X-1 binary system. Image credit: International Centre for Radio Astronomy Research.

Cygnus X-1’s Stellar-Mass Black Hole is More Massive than Astronomers Thought

Feb 19, 2021 by News Staff

A black hole in the Cygnus X-1 binary system is so massive that it challenges current stellar evolution models. An artist’s impression of the Cygnus...