Johannes Hevelius, Polish Astronomer

Johannes Hevelius (January 28, 1611 - January 28, 1687) was a Polish astronomer. He is remembered as the founder of lunar topography, who also described ten new constellations (seven of which are still recognized by astronomers). He made observations of sunspots, devoted four years to charting the lunar surface and discovered the Moon's libration in longitude. He discovered four comets, in 1652, 1661, 1672 and 1677. which led to his thesis that such bodies revolve around the Sun in parabolic paths. He died on his 76th birthday

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1680 Astronomer Comet Comets Enhancement Hevelius Johannes Observatory Zamek

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