Cygnus X-1 (abbreviated Cygnus X-1) bụ galactic X-ray isi iyi na constellation Cygnus, na mbụ dị otú ahụ isi iyi n'ọtụtụ ebe nabatara na-a nwa oghere. Ọ chọpụtara na 1964 n'oge a rọketi ụgbọ elu na bụ otu n'ime ndị kasị ike X-ray isi mmalite hụrụ si Earth, na-amị a elu X-ray njupụta nke 2.3 × 10−23 Wm−2 Hz−1 (2.3 × 103 Jansky). Ọ na-anọgide n'etiti ndị kasị mụọ astronomical akpọkwa na ya na klas. The kọmpat ihe ugbu a na-eme atụmatụ nwere a uka banyere 14.8 ugboro nke uka nke Sun na e gosiri na-adịkwa obere ịbụ ụdị ọ bụla nke nkịtị kpakpando, ma ọ bụ ndị ọzọ yiri ihe ọ bụla ma e wezụga a nwa oghere.
Cygnus X-1