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Stellar
1938 William W. Campbell, U.S. astronomer (Stellar Motions), dies at 76

1920 F Pease's interferometer measures 1st stellar diameter (Betelgeuse)

1910 William Huggins, discoverer of stellar nature of Andromeda, dies

1863 Annie Jump Cannon, U.S., stellar spectroscopist, Harvard-classification

1839 Thomas Henderson measures 1st stellar parallax (Alpha Centauri)



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