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science that studies the universe
deals with properties of objects in space
laws under which the universe operates |
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| believed in the Geocentric view |
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| 1st Greek to believe in sun-centered universe and retrograde motion |
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Greek
He figured out the planets' motion using the wrong model (Geocentric model) |
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| Copernicus, Nicolaus 1473 - 1543 |
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He said Earth was a planet
Model of the solar system was sun-centered or heliocentric. He said that Mercury, Venus, Earth, Mars, Jupiter, and Saturn orbit around the sun. |
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solar eclipses
stellar paralllax - shift in star's position |
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Galileo Galilei 1564 - 1642
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teloscope in 1609
4 moons of Jupiter
sunspots |
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Law of Universal Gravitation
3 laws of motion (inertia, forces, action/reaction
supported Kepler
Father of Calculus |
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| 3 laws of planetary motion |
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| The orbits of the planets are ellipse, with the Sun at one focus of the ellipse |
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| The line joining the planet to the Sun sweeps out equal areas in equal times as the planet travels around the ellipse |
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| The ratio of the squares of the revolutionary periods for two planets is equal to the ratio of the cubes of their semi major axes. |
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