Cygnus X-3 is a high-mass binary consisting of a compact object (likely a black hole) and a hot Wolf-Rayet star. This artist's concept shows one interpretation of the system. High-resolution X-ray ...

Cygnus X-3 is one of the earliest known X-ray binary systems in the universe. This binary system has been well-known since the early 1970s for its ability to fluctuate between being one of the ...