Alpha Centauri

(redirected from Alpha Centauri A)
Also found in: Thesaurus, Encyclopedia.
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.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Al′pha Centau′ri


n.
a triple-star system that is the brightest celestial object in the constellation Centaurus.
[< New Latin: Alpha of Centaurus]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

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.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Sitting just a little over four light years away, the Alpha Centauri system consists of three stars, Alpha Centauri A, B, and C.
It is the faintest of the three, which also include a much brighter pair of stars known as Alpha Centauri A and B.
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.
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.
Days on a planet orbiting Alpha Centauri A or B would follow a weird alien cycle.
While the newly discovered planet circles Alpha Centauri B, it's part of a system of three stars: Alpha Centauri A, B and the slightly more distant Proxima Centauri.
How far from the earth is the star Alpha Centauri A? 5.
Actually, there are two Alpha Centauri stars: Alpha Centauri A and Alpha Centauri B.
The question, then, is: what can be done to slow down the nanocrafts long enough to not only examine the stars Alpha Centauri A and B, but to also venture close to the red dwarf Proxima Centauri and study the Earth-like planet Proxima b?
But because Alpha Centauri A is bigger, brighter and more rambunctious, any small planets orbiting it would be harder to find.
It is actually a triple star-a system consisting of two stars similar to the Sun orbiting close to each other, designated Alpha Centauri A and B, and a more distant and faint red component known as Proxima Centauri.