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The entire wiki reimagined as a visual magazine with video discovery · Watch your interests come alive
WikiVisually
The entire wiki reimagined as a visual magazine with video discovery · Watch your interests come alive
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Binary star
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A binary star or binary star system is a system of two stars that are gravitationally bound to and in orbit around each other. Binary stars are among the most important objects in astrophysics because
The nearest binary star Alpha Centauri, as photographed by the Hubble Space Telescope
The nearest binary star Alpha Centauri, as photographed by the Hubble Space Telescope
Edge-on disc of gas and dust present around the binary star system HD 106906
Edge-on disc of gas and dust present around the binary star system HD 106906
Artist's conception of a cataclysmic variable system
Artist's conception of a cataclysmic variable system
Artist's impression of the binary star system AR Scorpii
Artist's impression of the binary star system AR Scorpii
Cygnus X-1
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Cygnus X-1 is a galactic X-ray source in the constellation Cygnus and was the first such source widely accepted to be a black hole. It was discovered in 1964 during a rocket flight and is one of the s
Binary star
…close binary systems can exchange mass, which may bring their evolution to stages that single stars cannot attain. Examples of binaries are Sirius and Cygnus X-1 (Cygnus X-1 being a well-known black hole). Binary stars are also common as the nuclei of many planetary nebulae, and are the progenitors of both novae…
The companion star of the black hole Cygnus X-1 is the brighter of the two stars in the middle of the photo. A bowshock is created by the jet of energ
The companion star of the black hole Cygnus X-1 is the brighter of the two stars in the middle of the photo. A bowshock is created by the jet of energetic particles from the black hole as they collide with the interstellar medium. It can be seen as the arc near top of the photo.
X-ray image of Cygnus X-1 taken by a balloon-borne telescope, the High-Energy Replicated Optics (HERO) project
X-ray image of Cygnus X-1 taken by a balloon-borne telescope, the High-Energy Replicated Optics (HERO) project
Chandra X-ray Observatory image of Cygnus X-1
Chandra X-ray Observatory image of Cygnus X-1
A Chandra X-ray spectrum of Cygnus X-1 showing a characteristic peak near 6.4 keV due to ionized iron in the accretion disk, but the peak is gravitati
A Chandra X-ray spectrum of Cygnus X-1 showing a characteristic peak near 6.4 keV due to ionized iron in the accretion disk, but the peak is gravitationally red-shifted, broadened by the Doppler effect, and skewed toward lower energies