Cygnus X-1 Black Hole Candidate
by David A. Hardy, Futures: 50 Years In Space/science Photo Library
Title
Cygnus X-1 Black Hole Candidate
Artist
David A. Hardy, Futures: 50 Years In Space/science Photo Library
Medium
Photograph - Photograph
Description
Black hole. Artwork of the Cygnus X-1 system, thought to contain a black hole. The system comprises a blue giant star (right) and a small dense object that accretes matter from the star. This object is a powerful emitter of X-rays, due to being heated to extremely high temperatures in the accretion disc. Its mass and X-ray emission both suggest it is a black hole, but no definitive answer has been found. A black hole is a region of space in which the gravitational field is so strong that even light cannot escape. They are thought to form in supernovae, the explosive deaths of massive stars. Cygnus X-1 is around 82,000 light years away.
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October 7th, 2018
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