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...
The nebulosity of M45, the Pleiades is apparently created by a cloud of interstellar dust , either left over from the birth of these young and hot stars, or the stars just happen to tra...