Messier 55 is a globular cluster in the constellation of Sagittarius, located 17.600 light-years away. Being discovered by Nicolas Louis de Lacaille in 1752 from South Africa, this clus...
Alpha Centauri is a triple star system in the southern constellation of Centaurus. It consists of three stars: Rigil Kentaurus, Toliman and Proxima Centauri. Proxima Centauri is also th...