Medieval monk may have mapped Halley's return centuries before Halley

TL;DR Summary
New research argues that 11th‑century English monk Eilmer of Malmesbury connected two Halley’s Comet appearances (989 and 1066), effectively recognizing its periodic orbit long before Edmond Halley’s 1705 calculations—raising the possibility that Eilmer deserves credit for predicting the comet’s return.
Topics:science#archaeology#edmond-halley#eilmer-of-malmesbury#halleys-comet#history-of-science#malmesbury
- Halley wasn't the first to figure out the famous comet. An 11th-century monk did it first, new research suggests. Live Science
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- Halley’s Comet wrongly named: 11th-century English monk predates British astronomer universiteitleiden.nl
- Halley’s comet may need a new, medieval name Popular Science
- 'You source of tears...': A monk saw the 76-year comet TWICE 600 years before Edmond Halley did WION
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