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He was considered as the father of astronomy because he championed an heliocentric theory that was breaking away from the Aristotelia theories.
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He gave credence to conarnicus's claims that the sun was the center of the universe telescope.
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he inventted the telescope, providing the orbits of the sun. he collted data that enable Kepler.
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He contributed a mathermical law of motion to astronomy And Kepler law.
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Cassini is known for Cassinin Division, Cassini's laws and cassinin oval.
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He's biggest contribution to astronomy was thelaw of gravity.
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He was a English astronomist, geophysicist, mathematic meteorgist and physicist who computing the orbit of the eponymous Halley's comet
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Charles Messier was a French astronomer best known for his astronomical publication cataloguing deep sky objects such as star cluteus and nebulane.
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William Herschell discovered the planet ubanus in 1781 with a self -made telescope he also discovered the star are not fixed.
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Cannon contribution to astronomy was the Henry Draper catalogue named after the first man to photograph stellar specta, also for stellar dassi fication.
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Einstein contribution include the equivalence knew as mass and energy (E=mc^2) how to maximun speed, Messiev measure of times space general relatively.
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He discovered that Andromeda nebula is really a galaxy external to the miky way. He also discovered the expansion of the universe.
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Drake contributed to the search for extarrest ficationrial intelligence. Healso conducted the first SETI.He's famous for developing an equation called the Drake equation.
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Stephen is known for the theory of the evaportion of black holes and his contribtion to cosmology and quantum gravity.
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Dr. Sagan made seminal contyibutions to the study of planetray atmosphere,planetry surfaces and history of earth and exobiology.He popularizing astronomy to public.
