January 6, 1993: This is an image of a small portion of the Cygnus Loop supernova remnant, taken with the Wide Field and Planetary Camera on NASA's Hubble Space Telescope on April 24, 1991. The Cygnus Loop marks the edge of a bubble-like, expanding blast wave from a colossal stellar explosion which occurred about 15,000 years ago.
Credit: J.J. Hester (Arizona State University), and NASA.
Co-investigators: P.A. Scowen (Arizona State University), Ed Groth (Princeton University), Tod Lauer (NOAO), and the WFPC Instrument Definition Team.