Alpha Centauri

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Related to Alpha Centauri B: Proxima Centauri

Al·pha Cen·tau·ri

 (ăl′fə sĕn-tôr′ē)
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

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 ?
For example, in 2012 observers reported that they'd found what looked like an Earth-mass exoplanet hugging the orange Sun-like star Alpha Centauri B.
In 2012, astronomers reported in Nature that the star Alpha Centauri B hosts a planet roughly as massive as Earth, though too warm to be habitable (SN: 11/3/12, p.
3 light-years, this system is made up of the binary formed by the stars Alpha Centauri A and Alpha Centauri B, plus the faint red dwarf Alpha Centauri C, also known as Proxima Centauri.
First discovered in 1915, the Alpha Centauri System is part of the Centaurus constellation and is so close to one another that its two stars, Alpha Centauri A and Alpha Centauri B, can actually be seen in the night sky.
The astrophysicist points out that the star Alpha Centauri B is optimal for searches with current telescopes because it is one of the closest to Earth.
Alpha Centauri B has recently been in the news after the discovery of an Earth-mass planet in orbit around it.
Aunque comparada con la estrella que nos da vida a nosotros Alpha Centauri B es mas fria y algo mas pequena, el planeta Alpha Centauri Bb esta a una distancia de algo menos de 6 millones de kilometros de ella; solo un 4 por ciento de la que separa a la Tierra del Sol.
The mystery world circling Alpha Centauri B is thought to be much too hot to support life, with surface temperatures of around 1,500degC.
BRE[pounds sterling]KSEL (CyHAN)- European Astronomers have discovered an exoplanet roughly the size of Earth orbiting Alpha Centauri B, the star nearest our sun.
This artist's impression shows a planet, right, orbiting the star Alpha Centauri B, centre, a member of the triple star system that is the closest to Earth