Stock Photo: Cygnus X_1 is a famous binary star system, consisting of a black hole in orbit around a blue supergiant called HDE 226868. The blue star is of spectral class O9, has a temperature of around 30, 000K, and is 30 to 40 times the mass of the Sun and 25 times
Stock Photo: 4128R-456 Cygnus X_1 is a famous binary star system, consisting of a black hole in orbit around a blue supergiant called HDE 226868. The blue star is of spectral class O9, has a temperature of around 30, 000K, and is 30 to 40 times the mass of the Sun and 25 times

Image Number: 4128R-456
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Credit: Science Photo Library / Science Photo Library
Category: Science
SPH-F003-0030

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