Alpha Centauri  

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Kunstformen der Natur (1904) by Ernst Haeckel
Kunstformen der Natur (1904) by Ernst Haeckel

Alpha Centauri (α Centauri, α Cen; also known as Rigel Kent Template:IPAc-en—see names) is the brightest star in the southern constellation of Centaurus. Although it appears to the unaided eye as a single object, Alpha Centauri is actually a binary star system (designated Alpha Centauri AB or α Cen AB) whose combined visual magnitude of –0.27 would qualify it as the third single brightest star in the night sky after the –1.46 magnitude Sirius and the –0.72 magnitude Canopus.

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