Robert Fesen

SN 1885A (also S Andromedae) was a supernova in the Andromeda Galaxy, the only one seen in that galaxy so far by astronomers.

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Astronomers find a star that survived going supernova after colliding with another star. “I’ve worked on supernova remnants for 30 years and I’ve never seen anything like this,” said Robert Fesen, lead author of the study.