"Cygnus X-1" is the sixth and final track on Rush's fifth album, A Farewell to Kings.
Cygnus X-1 is an epic about a fictional space voyage to "Cygnus X-1". Inspiration for the story within the song was found in the observation of an X-ray source in the constellation Cygnus. Considered to be one of the most likely black hole candidates in the universe, Cygnus X-1 was discovered in the early 1970s by Canadian scientist…
In the constellation of Cygnus
There lurks a mysterious, invisible force
The black hole
Of Cygnus X - 1