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Omega Centauri (ω Cen, NGC 5139, or Caldwell 80) is a globular cluster in the constellation of Centaurus that was first identified as a non-stellar object by Edmond Halley in 1677. Located at a distance of 17,090 light-years (5,240 parsecs), it is the largest known globular cluster in the Milky Way at a diameter of roughly 150 light-years. [10]
Edmond Halley Biography (SEDS) Edmond Halley's 1716 paper describing how transits could be used to measure the Sun's distance, translated from Latin. A Halley Odyssey; The National Portrait Gallery (London) has several portraits of Halley: Search the collection Archived 19 December 2006 at the Wayback Machine; Halley, Edmond, An Estimate of the ...
It was known as Halley's Eclipse, after Edmond Halley (1656–1742) who predicted this eclipse to within 4 minutes accuracy. Halley observed the eclipse from London where the city of London enjoyed 3 minutes 33 seconds of totality. He also drew a predictive map showing the path of totality across the Kingdom of Great Britain.
Around 1677, Edmond Halley observed a transit of Mercury across the Sun, leading him to realise that observations of the solar parallax of a planet (more ideally using the transit of Venus) could be used to trigonometrically determine the distances between Earth, Venus, and the Sun. [16] In 1705, Halley realised that repeated sightings of a ...
Messier 13 was discovered by Edmond Halley in 1714, [2] and cataloged by Charles Messier on June 1, 1764, [9] into his list of objects not to mistake for comets; Messier's list, including Messier 13, eventually became known as the Messier catalog. [10] It is located at right ascension 16 h 41.7 m, declination +36° 28'. Messier 13 is often ...
1705 – Edmond Halley publicly predicts the periodicity of the comet of 1682 and computes its expected path of return in 1757. [102] 1715 – Edmond Halley calculates the shadow path of a solar eclipse. [103] 1716 – Edmond Halley suggests a high-precision measurement of the Sun-Earth distance by timing the transit of Venus. [104]
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The Halley Lectures are a series of annual public lectures hosted by the University of Oxford, in memory of the astronomer Edmond Halley.Currently, some podcasts of the lectures can be found through the Oxford Physics Public Lectures [1] These lectures aim to promote public understanding and engagement with science, mathematics, and related fields, and to inspire new generations of researchers ...