Image: Artist's impression of supernova 1993J
Description: This is an artist's impression of supernova 1993J, an exploding star in the galaxy M81 whose light reached us 21 years ago. The supernova originated in a double-star system where one member was a massive star that exploded after siphoning most of its hydrogen envelope to its companion star. After two decades, astronomers have at last identified the blue helium-burning companion star, seen at the center of the expanding nebula of debris from the supernova. The NASA/ESA Hubble Space Telescope identified the ultraviolet glow of the surviving companion embedded in the fading glow of the supernova.
Title: Artist's impression of supernova 1993J
Credit: http://www.spacetelescope.org/images/opo1438a/
Author: NASA, ESA, and G. Bacon (STScI)
Usage Terms: Creative Commons Attribution 4.0
License: CC BY 4.0
License Link: http://creativecommons.org/licenses/by/4.0
Attribution Required?: Yes
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