Blast From The Past: Astronomers Resurrect 16th-Century Supernova

Astronomers have used light echoes as a time machine to unearth secrets of one of the most influential events in the history of astronomy -- a stellar explosion witnessed on Earth more than 400 years ago. By using a Galactic cloud as interstellar “mirror,” astronomers have now re-analyzed the same light seen on Earth in the 16th century and have, for the first time, determined the exact type of the explosion that happened.

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