Overview
Research suggests that a medieval monk, Eilmer of Malmesbury, may have recognized the periodic return of a specific comet, observed in 1066 and previously in 989. This recognition would predate Edmond Halley's similar identification by nearly 700 years.
Research Context
Historically, comets have often been interpreted as omens. The celestial event of 1066, which is depicted in the Bayeux Tapestry, was associated with predictions of war and the deaths of royalty. The recent suggestion that Eilmer of Malmesbury recognized the comet of 1066 as a return of the comet he had seen in 989 challenges the established attribution of this discovery.
Findings
Researchers propose that Eilmer of Malmesbury identified the comet observed in 1066 as the same celestial body he had witnessed in 989. This identification implies an understanding of the comet's recurring nature. The comet, referred to as "Halley's Comet," is traditionally named after Edmond Halley due to his later recognition of its periodicity.
Why This Matters
This finding initiates discussion regarding the naming convention of Halley's Comet. It indicates a potential earlier understanding of cometary periodicity than previously acknowledged within historical astronomy.