Supernova Remnant: Cassiopeia A
The remains of the beautiful (but certainly destructive) supernova explosion of Cassiopeia A. This supernova took place over 300 years ago (give or take a decade I suppose). NASA observations from the Hubble Space Telescope and the Chandra X-Ray Observatory combine to give us a full-spectrum idea of the full-scope of the Supernova Remnant, or as NASA has called it: the "sizzling remains of a dead star."
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