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Published in 2019 at "Journal for the History of Astronomy"
DOI: 10.1177/0021828619877967
Abstract: In 1717, Halley compared contemporaneous measurements of the latitudes of four stars with earlier measurements by ancient Greek astronomers and by Brahe, and from the differences concluded that these four stars showed proper motion. An…
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Keywords:
halley discover;
halley;
discover proper;
motion cassini ... See more keywords