Scientists Hold Seance for Supernova

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This image shows the remnant of a star that exploded called Cassiopeia A (center) and its surrounding light echoes. Image credit: NASAJPL-Caltech
This image shows the remnant of a star that exploded, called Cassiopeia A (center) and its surrounding "light echoes." Image credit: NASA/JPL-Caltech

Astronomers have unearthed secrets from the grave of a star that blasted apart in a supernova explosion long ago. By decoding ghostly echoes of light traveling away from the remains of a supernova called Cassiopeia A, the scientists have pieced together what the star looked like in life, and ultimately how it met its demise.


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