High speed gas from a supernova explosion slams into dark cooler clouds of interstellar material. Shocked and heated by this tidal wave of energy, the clouds glow in bright, neon-like colors. (Image Released: February 1995)
Pictures of Stars - Cygnus Loop: Blast Wave from a Stellar Time-Bomb
From Nick Greene, former About.com Guide
Pictures of Stars - Cygnus Loop: Blast Wave from a Stellar Time-Bomb
Jeff Hester (Arizona State University) and NASA©2009 About.com, a part of The New York Times Company.
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