He lived 1646 to 1719 and found 300 star positions.
He lived 1730 to 1817 and published a star catalog [1771 to 1784].
He lived 1738 to 1822, studied infrared light [1773 to 1781], first saw Uranus [1781], and published a star catalog [1782 to 1802]. Solar system is moving through space [1783].
He lived 1799 to 1875 and found 300,000 star positions.
She lived 1863 to 1941, cataloged many stars, and invented star spectral classification system: O, B, A, F, G, K, and M.
He lived 1913 to ? and used radio astronomy at Jodrell Bank [1957].
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Date Modified: 2022.0225