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

1 min read
Source: Live Science
Medieval monk may have mapped Halley's return centuries before Halley
Photo: Live Science
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.

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