Alpha Centauri

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Related to Alpha Centauri A: Beta Centauri, Proxima Centauri, Alpha Centauri B

Al·pha Cen·tau·ri

 (ăl′fə sĕn-tôr′ē)
n.
A multiple star in Centaurus, 4.4 light years from Earth, whose three components form the brightest object in the constellation and the third brightest star in the night sky.

Al′pha Centau′ri


n.
a triple-star system that is the brightest celestial object in the constellation Centaurus.
[< New Latin: Alpha of Centaurus]

Al·pha Cen·tau·ri

(ăl′fə sĕn-tôr′ē)
A multiple star consisting of three stars in the constellation Centaurus. It is the star nearest Earth, at a distance of 4.4 light-years, and it is the third brightest star in the night sky. ♦ Prox·i·ma Centauri (prŏk′sə-mə) is the individual star in this system that is closest to Earth, but it is very faint and far from the system's center of mass.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.Alpha Centauri - brightest star in Centaurus; second nearest star to the sun
Centaurus, Centaur - a conspicuous constellation in the southern hemisphere near the Southern Cross
References in periodicals archive ?
The brighter star, named Alpha Centauri A, is yellow, like the Sun.
Washington, Feb 20 ( ANI ): ESA's Herschel space observatory has detected a cool layer in the atmosphere of Alpha Centauri A, the first time this has been seen in a star beyond our own Sun.
But because Alpha Centauri A is bigger, brighter and more rambunctious, any small planets orbiting it would be harder to find.
It is part of a triple system consisting of a pair of Sun-like stars, Alpha Centauri A and B, and a more distant and faint red companion, Proxima Centauri.
Days on a planet orbiting Alpha Centauri A or B would follow a weird alien cycle.