"In July 1054, court astronomers in China recorded a new “guest star” near Tianguan, the star we now call Zeta Tauri. It was bright enough to be seen in daylight."
https://spacedaily.com/t-nearly-a-millennium-ago-sky-watchers-recorded-a-new-star-so-bright-it-was-visible-in-daylight-for-weeks-and-hubble-has-now-traced-how-far-its-remnant-the-crab-nebula-has-expanded-since-a/
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