Messier 27 (M27), also known as the Dumbbell Nebula, Diabolo Nebula or Apple Core Nebula, is a planetary nebula in Vulpecula. The Dumbbell Nebula is large in size and quite bright, which makes it a popular object among amateur astronomers. It can be seen in binoculars and small telescopes. The nebula covers an area of … Continue reading Messier 27: Dumbbell Nebula