Scientists shed light on supernova origins

Wednesday, February 17, 2010 - 19:42 in Astronomy & Space

The so-called Type 1a supernovae are key to measuring celestial distances. Astronomers find evidence that they're formed by the collision of two white dwarfs. German astronomers using a U.S. telescope have provided scientists with at least a partial answer to a vexing question: What is the origin of the so-called Type 1a supernovae, which are widely used as celestial mileage markers?

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