A famous sixteenth-century supernova, seen by Tycho Brahe, is still a hot topic. The stellar explosion might have been initiated by a companion star — and modern astronomers have at last identified it.
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Branch, D. Tycho's mystery companion. Nature 431, 1044–1045 (2004). https://doi.org/10.1038/4311044a
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DOI: https://doi.org/10.1038/4311044a
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