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ptolemy (" (.), ancient astronomer, geographer, and mathematician who…
ptolemy
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ancient astronomer, geographer, and mathematician who considered the Earth the center of the universe
Ptolemy's model:
"Earth-centered," or "geocentric"
Ptolemy believed that objects including the planets, Sun, Moon, and stars orbited Earth. Earth, in the center of the universe, did not move at all.
planets, like Uranus and Neptune, are missing from both charts because they had not been discovered at the time.
copernicus
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the orbits of the planets were circular, but we now know they are elliptical.
Copernicus was correct about some things, but wrong about others. The Sun is not in the center of the universe
Copernicus thought that the planets orbited the Sun, and that the Moon orbited Earth.
he said that stars are in a fixed placed and jumbled up. he Sun, in the center of the universe, did not move
Tycho brache
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Made some of the most accurate observations of planetary positions which would eventually prove useful to his predecessors.
helped overturn that belief in favor of a heliocentric model of the universe, with the sun at the center.
1546 - 1601. supported the Copernicus model with some minor changes,
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Johannes Kepler
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All planets move about the Sun in elliptical orbits, having the Sun as one of the foci
laws regarding planetary motion, he made several other contributions to science. He was the first to say that refraction drives vision in the eye
Johannes Kepler 1571 - 1630, he was a mathematician and he was in favor with helicocentric.
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galileo galilei
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His discoveries provided the evidence to support the theory that the earth and other planets revolved around the sun
Using the telescope, Galileo discovered the mountains on the moon, the spots on the sun, and four moons of Jupiter. n.
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Issac nuton
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Issac nuton 1643 - 1727 he believed in helicocentric and he also identified gravitational force when an apple fell on his head and he realized some force is pulling it down also he the first to invent reflecting telescope
when an apple fell on his head and he realized some force is pulling it down also he the first to invent reflecting telescope
Albert Einstein
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n the bomb's development, specifically his work on energy and mass and his famous equation: E=mc2.
Edwin Hubble
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Hubble's Law to show that the other galaxies are moving away from the Milky Way at a speed directly proportionate
Edwin Hubble 1889 - 1953 he discovered that there are more than one galaxy there are many and many milk ways which contain different things
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Stephen hawking
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Jane Wilde is Stephen Hawking's first wife and mother to his three children, Robert, Lucy and Timothy.
Stephan hawking discovered black holes that are formed from big stars that die and he said that the hawking radiation to be completely independent of the material entering the black hole.
(born January 8, 1942, Oxford, Oxford shire, England—died March 14, 2018