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ptolemy was born in 87 AD
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Developed the Geocentric model
PROOF
the sun, moon, and stars appear to revolve around the earth
it was also believed that the earth didnt move because we couldn't feel it move -
Ptolemy died in 150 AD
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copernicus was born
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copernicus publishes a book in which he announces his hypothesis, that our solar system revolves around the sun
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Nicholas copernicus dies at the age of 70
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Galileo was born
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Kepler dies at the age of 58
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Kepler was Born
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kepler discovers that plants have elliptical orbits along with other theories on planetary motion
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developed the theory of tides
was the first to use a telescope to study the planets
proved the heliocentric theory of copernicus using the telescope -
Galileo dies at the age of 77
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Isaac newton was born
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newton develops the theories of gravity and inertia
Inertia- an object in motion tends to stay in motion and an object at rest tends to stay at rest unless acted on by an putward unbalanced force. -
Isaac Newton died at the age of 84
