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August 20, 2005
Supernova shock wave creates halo effect
Topics: General Science
The shock wave from a bright supernova that exploded in 1987 has now reached the edge of a cavity around the dead star, reveal new observations with the Hubble Space Telescope and the Chandra X-ray Observatory.
As intense heat from the shock wave continues to spread, it will illuminate the dense gas blown off by the detonating star, which was originally about 20 times more massive than our Sun.
Called 1987A, the supernova was the brightest recorded in 400 years and exploded in a nearby galaxy called the Large Magellanic Cloud. Astronomers believe that about a million years before the supernova, the star lost most of its outer layers through a slow-moving wind of particles.
Posted by Richard at August 20, 2005 12:10 PM
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