Halley wasn't the first to figure out the famous comet. An 11th-century monk did it first, new research suggests.
SMRTR summary
An 11th-century English monk named Eilmer of Malmesbury identified Halley's comet's 75-year cycle 600 years before astronomer Edmond Halley received credit for the discovery.
SMRTR provides this summary for quick context. The original article belongs to Live Science.
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