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The original was posted on /r/todayilearned by /u/dakp15 on 2025-06-28 23:16:02+00:00.

Original Title: TIL that Halley’s Comet was first observed and recorded in Chinese chronicles in 240BC. Since the. It has been recorded around 30 times approximately every 75 years. After being observed in England in 1066 it was determined to be a bad omen and was included in the Bayeux Tapestry