Summary:
- In the 11th century, an English monk named Eilmer of Malmesbury made observations and calculations about the periodic appearance of Halley's Comet, over 600 years before the famous astronomer Edmond Halley.
- Eilmer's writings show that he accurately predicted the comet's return in 1038, long before Halley's calculations in the 17th century.
- This discovery suggests that medieval scholars had a more advanced understanding of astronomy and comets than previously believed, challenging the common perception of the "Dark Ages" as a period of scientific stagnation.