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A huge explosion that came from nothing. All matter and energy are in a single point, and the laws of physics are not understood at that time.
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It kept track of solar and lunar eclipses. Had true astronomical alignment.
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Said the earth has 3 motions, it wobbles, orbits, and rotates.
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Started the theory of a geocentric model. He is known as the wrongest for the longest.
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Thought the sun was the center of the solar system, he was totaly ignored. He looked at the distance and size of the sun compared to the moon.
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He was an influential Greek philosepher, and said the earth must be round. He believed in the geocentric model and the moon is closer than the sun and it also moves around the earth.
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First to publish that the sun is the center of the universe or the heliocentric model, but it wasn't an oval, they were perfict circles.
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He made the most accurate celestial observations of his time and challenged the prevailing belief in how the universe was organized.
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He was Tycho's assistant and believed in heliocentrism. He used math and physics to prove Copernicus was right. He had 3 laws, Law of ellipses, Lasw of equal areas, and the Hermonic law.
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He supported Keplers work on planitary motion. He used and improved the new telescope.
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He studied the rings of Saturn and discovered its moon Titan. He also invented the pendulum clock.
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He discovered four satellites of the planet Saturn and noted the division of the rings of Saturn.
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Newton built the first practical reflecting telescope. He studied gravity and its affects on planets and their orbit.
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He discovered Uranus and 2 of its major moons, and he also discovered 2 moons of Saturn.
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His big achievement is that he found the circumference of the earth.
