SN 1572

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SN 1572 was a supernova seen in 1572 that could be seen in the constellation Cassiopeia. It is sometimes called "Tycho's Nova" or "Tycho's Star" since Tycho Brahe studied it. The supernova became visible in November 1572 and stayed visible until 1574. SN 1572 is one of only about ten supernovas that could be seen without telescopes.