Cygnus X-1 (oo loo soo gaabiyo Cygnus X-1) waa isha galactic X-ray ee ku taal xiddigta Cygnus, iyo isha ugu horreysa ee noocaas ah ee si ballaaran loo aqbalay inay tahay god madow. Waxaa la ogaaday 1964 intii lagu jiray duulimaad gantaal ah waana mid ka mid ah ilaha ugu xoogan ee X-ray ee laga arko Dhulka, oo soo saara cufnaanta ugu sarreysa ee X-ray ee 2.3 × 10−23 Wm−2 Hz−1 (2.3 × 103 Jansky). Waxay ka mid tahay waxyaabaha ugu badan ee la bartay ee fasalkeeda.
Cygnus X-1