This Star Went Supernova … And Then Went Supernova Again

To quote the first line of a letter published today in the journal Nature, “Every supernova so far observed has been considered to be the terminal explosion of a star.” In other words, when a massive star blows itself up, it should remain dead. This is something astronomers have witnessed thousands of times before with absolutely no exceptions.

That is, until now. For the first time, astronomers have discovered a star that has gone supernova more than once. This so-called “zom

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