M57 - The Ring Nebula
The Ring Nebula is a beautiful example of a shell of gas surrounding a stellar corpse, in this case, a white dwarf (the central star is not visible in the photograph above).
The ghostly Helix Nebula shown below is one of the largest planetary nebula in the sky.
The Helix Nebula in Aquarius
The Dumbbell Nebula (below) is one of the brightest planetary nebula know.
M27 - The Dumbbell Nebula
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