US Edition11th-century English monk first identified the cycles of Halley’s Comet
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On the night of March 13-14, 1986, a large and bright object, with a visible tail from Earth, crossed the sky. It was 76 years since no one saw that trail passing through space in its path, in the form of an elongated ellipse, around the sun. It was, as many may have already imagined, the Halley comet, which we will not see again until 2061.
11th-century English monk first identified the cycles of Halley’s Comet
According to a new study published in arXiv, an 11th-century English monk first documented multiple appearances of Halley’s Comet, more than 600 years before Edmond Halley codified its orbit. Simon Portegies Zwart, an astronomer at Leiden University, and Michael Lewis, one of the British Museum’s scientists, conducted the study. By comparing medieval chronicles and astronomical records, the researchers conclude that the 11th-century monk Eilmer …
Halley's Comet May Have the Wrong Name
Halley's Comet returns every 75-77 years, and is named after English astronomer Edmond Halley because he was the first to figure out it was the same comet returning each time instead of a new comet. Knowing what we know now, we have documentation on the comet's appearance going back to 240 BC, and records of its observation in 164 BC, 87 BC, 12 BC, and every appearance since, although these records came from different parts of the world. But was…
An interdisciplinary research published this week has called into question the paternity of one of the most celebrated astronomical discoveries of the modern era: the determination of the Halley comet cycle. The work, led by stellar dynamic teacher Simon Portegies Zwart in collaboration with historian Michael Lewis, demonstrates through the [...]
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