An artist's impression of the Cygnus X-1 system. (IMAGE)

International Centre for Radio Astronomy Research

An artist's impression of the Cygnus X-1 system.

Caption

An artist's impression of the Cygnus X-1 system. A stellar-mass black hole orbits with a companion star located 7,200 light years from Earth.

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Credit: International Centre for Radio Astronomy Research.

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