“Chandra Reveals the Elementary Nature of Cassiopeia A” was uploaded to Flickr

Due to its unique evolutionary status, Cassiopeia A (Cas A) is one of the most intensely studied of these supernova remnants. via NASA ift.tt/2C6ofVz
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Chandra Reveals the Elementary Nature of Cassiopeia A was taken on December 12, 2017 at 03:47AM