<span class="SFPTagline"> From SCIFIPEDIA </span>

For other uses see Alpha Centauri (disambiguation)

Alpha Centauri, also known as Rigil Kentaurus is the fourth brightest star system in Earth's night sky, located within the Centaurus constellation. Though the system appears as a single bright point in sky the system is actually made up of three stars. The system is the closest star system to Earth at 4.37 light-years. Its closest star, Proxima Centauri, is 4.22 light-years away. The other two stars in the system are classified as Centauri A and B.