Clear Skies, Still Air, a Nebula, and a Booser Fuel Dump

" Rocket Booster Fuel Dump - 11 Nov. 2007" shows what happens when a spacecraft dumps fuel between an astronomer and a nebula.

Amateur astronomers may appreciate some of the technical details the poster mentions.

Most people may enjoy this cool photo.

Speaking of astronomers, amateur and otherwise: If you can identify this nebula, please leave a comment. Thanks!