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Definition of Alpha Centauri A
1. Proper noun. (star) The brightest star in the southern constellation of Centaurus. Alpha Centauri is actually a binary star with Alpha Centauri C or Proxima Centauri as a third component. Alpha Centauri A is the brightest star of the system and is somewhat brighter than our sun. Alpha Centauri B is somewhat fainter than Alpha Centauri A but much brighter than Proxima Centauri. ¹
¹ Source: wiktionary.com
Lexicographical Neighbors of Alpha Centauri A
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