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Galelei derived his theory from Copernicus. To Copernicus it was just a theory. Galilei managed to prove it when he invented the telescope and was able to see the moons orbiting Jupiter.

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Q: Compare the theory of Galilei to Copernicus what observation you meet?
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Related questions

What astronomer proved Copernicus' theory that the earth revolves around the sun?

Galileo Galilei

Who proved Copernicus' heliocentric theory?

Galileo Galilei with the help of his improvement on the invention of the telescope.

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Kepler assumed that planetary orbits were eliptical, but only after he found that doing so was the only way to match observation with theory. Nicolae Copernicus, and later Galileo Galilei, could not imagine these orbits being anything but circular.

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Copernicus observation contradicted aristoles theory

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Copernicus thought that the Earth was not in the center of the universe but no one believed him until Galileo Galilei proved him correct.

Using observation and logic how did Copernicus disprove ptolemy's theory about the universe?

Copernicus proved that earth is the center of the universe

Using observation and logics how did Copernicus disprove ptolemy theory about the universe?

Copernicus proved that earth is the center of the universe

How were the contributions of nicolaus Copernicus and Galileo galilei to the scientific to the scientific revolution different?

Copernicus created the mathematical theory to prove that the Sun, not the Earth, was the centre of our solar system. Galilei provided the calculations and observations to prove Copernicus' theory.

Using observation and logic how did Copernicus disprove ptolemys theory about the universe?

Copernicus proved that the Sun is the center of the universe. NovaNet Answer

Who used a telescope to prove the heliocentric theory?

The heliocentric theory was first presented by Aristarchus of Samos. In the 16th century, mathematician and astronomer Nicolaus Copernicus, presented a detailed observation. In the following century, supporting observations made using a telescope were presented by Galileo Galilei.

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