Cygnus X-1

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Cygnus X-1
System information
Star names Black Hole/Supergiant binary[1]


Cygnus X-1 is a binary star system composed of a black hole and a supergiant primary, where matter from the supergiant forms an accretion disk around the black hole and generates a vast outflow of X-ray radiation.[1] In 3002 it was visited by the Explorer Corps vessel ECV Herschel that had previously surveyed the star Sador (Gamma Cygni) and then traveled a short distance from there to Cygnus X-1 which they studied from a safe distance.

It seems unlikely that such a system could have planets; even if it did, it seems safe to assume they would be uninhabitable given that the Herschel had to survey the system from a distance (in astronomical terms).


  • Cygnus X-1 is a real stellar object, known to be a source of intense X-ray radiation and thought to be a black hole. Like its BattleTech counterpart, it is closely orbited by a blue supergiant star that gives off matter which forms an accretion disk around Cygnus X-1. However, the real Cygnus X-1 system is located ca. 6,070 light years from the Sol system whereas its BattleTech counterpart could be reached after traveling a short distance from Sador, which in turn was described as merely 815 light years away from Sol (while the real, nonfictional Sador is some 1,800 light years from Sol).


  1. 1.0 1.1 Explorer Corps, p. 6