Cygnus X-1 is a black hole about 15 times the mass of the Sun in orbit with a massive blue companion star. Astronomers used several telescopes including Chandra to study Cygnus X-1. The combined data have revealed the spin, mass, and distance of this black hole more precisely than ever before. Stephen Hawking lost a bet - originally placed in 1974 -- that Cygnus X-1 did not contain a black hole.
Esta es la siempre espectacular Nebulosa del Tulipán. Se encuentra a 8.000 años-luz de distancia de la Tierra, en la dirección de la constelación del Cisne. En su interior, además, está Cygnus X-1, un microquásar. #astronomia #ciencia
Tulip Nebula, at least in the field seen from earth, is in close proximity to microquasar Cygnus X-1, site of one of the first suspected black holes. It is also called Sharpless 101 (Sh2-101) or the Cygnus Star Cloud because the nebula located in the constellation Cygnus.
In the Milky Way there’s a single X-ray binary — a system consisting of a black hole capturing and heating material from an orbiting companion star — known as Cygnus X-1. But 30 million light-years away in the Whirlpool galaxy, M51, there are hundreds of X-ray points of light and a full 10 X-ray binaries.