The Lagoon Nebula, also known as Messier 8 (M8), is a vast star-forming region in the constellation Sagittarius, approximately 4,000 light-years away from Earth.
Staring back at us from 650 light-years away, the Helix Nebula (NGC 7293) is one of the closest and most detailed planetary nebulae ever observed. Often called the "Eye of God", this co...