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...
M2, a.k.a NGC 7089 a globular cluster ~55,000 light years away and ~175 light years across in Aquarius. It is one of the oldest globular clusters in our milky way ~12.5 billion years o...