Exoplanet Discovered In Alpha Centauri Star System

The Alpha Centauri Star System is a stellar system composed of three stars; Alpha Centauri A, Alpha Centauri B, and Proxima Centauri. Being only 4.3 light years away from our Solar System, the Alpha Centauri star system is the closest star system to us. Of the three stars, Proxima Centauri is the closest to the Earth.

Using the High Accuracy Radial velocity Planet Searcher (HARPS) spectrograph at La Silla Observatory in Chile, astronomers have discovered an exoplanet that is about the same mass of the earth orbiting Alpha Centauri B.