This video pans over NASA/ESA Hubble Space Telescope observations of the Veil Nebula. The features of the nebula, shown in different colours, are caused by the shockwave of the dying star and the interstellar gas it was surrounded by.
More information and download options: http://www.spacetelescope.org/videos/heic1520b/
Credit: NASA, ESA, Hubble Heritage Team
Music: Johan Monell (http://www.johanmonell.com/)