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He came up with the theory of heliocentrism which states that the sun is at the center of the solar system.
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He discovered the variation of the moon's longitude.
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He worked to prove heliocentrism as well as making huge improvements to the telescope. He became the father of modern physics.
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He is best known for the laws of planetary motion focusing on ellipses and orbits.
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He discovered 4 satellites of saturn. He noted the division of Saturn's rings.
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He formulated the laws of motion and universal gravitation. As well as building the first practical telescope.
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He computed the orbit of Halley's Comet. It occurs every 75-76 years.
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He published an astronomical catalog consisting of nebulae and starclusters. This catalog was later called "Messier Objects"
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He discovered Uranus and its two moons, Titania and Oberon, as well as discovering two moons of Saturn.
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She created the Harvard Classification Scheme which was the first real try to organize and classify stars by temperature.
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He came up with the theory of reletivity, the mass/energy equivilency equation e=mc2 as well as helping to establish quantum theory.
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He showed that the recessional velocity of our galaxy and all galaxies increase with their distance from earth ,which implies that the universe is in expansion.
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He founded SETI or Search for Extra Terrestrial Intelligence, and came up with the Drake equation which is used to estimate the number life supporting systems in the Milky Way Galaxy.
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He discovered the high surface temperatures of Venus. He also demonstrated the production of amino acids from radiation.
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He collaberated on gravitational singularity theorems in general reletivity framework and theoretical prediction that black holes emit radiation. He also explained the unity of quantum mechanics and the general theory of reletivity
