Medieval monk may have spotted Halley's comet

A historian from the University of Leicester suggests that Eilmer of Malmesbury, a medieval monk, might have observed Halley's Comet on two separate occasions. The proposed sightings are dated to 1018 and 1066. This theory revisits historical accounts and astronomical records to determine the accuracy of Eilmer's potential observations. The complexity arises from distinguishing between different celestial events and the reliability of medieval documentation. Further analysis is needed to confirm whether Eilmer witnessed one comet multiple times or two distinct cometary appearances.