"Two astronomers in the US have found a Type 1a supernova that did not leave behind a surviving companion star after it exploded. Instead, they conclude that the supernova was caused by two white-dwarf stars colliding and then both stars being consumed in the conflagration. Although the observation is of just a single supernova, the discovery adds weight to the theory that at least some Type 1a supernovae are the result of such collisions."in PhysicsWorld
Tuesday, January 17, 2012
Supernova eats white dwarfs
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