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The eart revolved around the sun
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Stars clasified acoording to their brightness.
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Geocentric astronomic model. Sun, moon, and the five known planets (Venus, Mercury, Mars, Jupiter, and Saturn) revolved around the Earth.
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Heliocentric model. Planets revovled around the sun.
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He carried out very detailed observation of the planets.
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He deduced his famous planetary laws following Brahe's observations.
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He used the telescope for the first time, it was the birth of modern astronomy.
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Built the first telescope usin mirrors instead of lenses.
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The laws governing the movement of planets are explained by Isaac Newton.
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Explained Newton's laws and predicted the return of a comet in 1758
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Discovered Uranus
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Created thanks to the spectroscope, an apparatus wich allows us to identify substances in the stars.
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Measured the distance from a star using geometry. This confirmed Copernicus's theory.
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Discovery of Neptune.
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Proved that some of the nebulas seen in sky are independent galaxies. He discovered galaxies moved away from each other.
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Discovered pluto.
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First man walking on the moon.
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Discovery
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Discovery of the largest Kuiper Belt object (KBO) ever.
