Emerging like a celestial dolphin leaping through the cosmos, Sh2-308, or the Dolphin Nebula, is a striking example of a Wolf-Rayet bubble located in the Canis Major constellation. This...
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...