The Cygnus Loop
Depicts: Cygnus Loop
Copyright: Jeff Hester (Arizona State University) and NASA
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This image shows a small portion of a nebula called the "Cygnus Loop." Covering a region on the sky six times the diameter of the full Moon, the Cygnus Loop is actually the expanding blastwave from a stellar cataclysm - a supernova explosion - which occurred about 15,000 years
ago.
Last Update: 1 September 2019