Taken yesterday at NASA's Johnson Space Center. I wanted to showcase some of the incredible mechanics of this rocket engine so I'm presenting that on the top image with the underlying image being the entire frame in order to provide some context to the more detailed crop.
Title: "Rocket Science" (rollover)

Camera / Lens: Canon 5D Mark II / Canon 24-105mm L zoom
Post-processing: Photomatix Pro > Photoshop CS4 > Topaz Adjust Plugin