Not many supernova have been observed to date . Below is a link to a discussion about one extra bright supernova that happened 10 Billion years ago.
My interest is that it is very far away and very bright and I wonder if it just might be the the central supermassive black mass of a galaxy exploding as part of its galacy's continuing evolution from very dense to very widely distributed but still gravitationally together as a galaxy. Now all falling back together .
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