The Dumbbell Nebula by Astro Gabe on Flickr.

Via Flickr:
The Dumbbell Nebula (also known as the apple-core nebula) in Vulpecula is a planetary nebula about 1400 ly away. Taken in two specific wavelengths of light and mapped to color, the nebula has an apple-core like red (Halpha) region, bluer outer lobes (OIII) and a fainter outer shell beyond that.