Supernova 1987a. This star exploded
in 1987 in a nearby galaxy (170000
light years away). A ring of gas
expands from the site of the explosion
which is 10 light years in diameter
Copyright 1993 Bradford Technology Limited, Armagh Planetarium and Mayfield Consultants. Automatic HTML conversion by Mark J Cox on Tue Jan 30 09:30:24 GMT 1996
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