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Galileo's telescopic observations of the 4 large moons of Jupiter and the phases of Venus helped support the heliocentric model of the solar system developed by Copernicus. Copernicus predicted that all phases would be visible since the orbit of Venus around the Sun would cause its illuminated hemisphere to face the Earth when it was on the opposite side of the Sun and to face away from the Earth when it was on the Earth-side of the Sun. In contrast, the geocentric model of Ptolemy predicted that only crescent and new phases would be seen since Venus was thought to remain between the Sun and Earth during its orbit around the Earth. Galileo's observations of the phases of Venus proved that it orbited the Sun and lent support to (but did not prove) the heliocentric model.
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TaigaActually, Galileo's observation of the phases of Venus supported the heliocentric model proposed by Copernicus. By seeing Venus go through phases like the Moon, it indicated that Venus revolved around the Sun, not the Earth. This contradicted Ptolemy's geocentric model with epicycles.
Yes, of course. Venus showed phases, which indicated it revolved around the sun, and Jupiter had moons, which showed that not everything revolved around the Earth.
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Additional information: the phases of Venus are also explained by the geocentric system, which allows for Venus to pass between the Sun and the Earth - the condition for causing the crescent phase to be seen from Earth.
So Venus's phases neither support nor contradict the heliocentric model. However Jupiter's moons were the first objects discovered that definitely did not orbit round the Sun. So this gave an indirect boost to the heliocentric concept by showing it isn't impossible.
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What was foundation of Ptolemys geocentric model of the universe?
Earth was the center of the universe
What year was ptolemys world map made in?
his map was made in 1482. and used by cristpher colombus.
Who developed ideas that contradicted Ptolemys geocentric model of the universe?
Scientists such as Nicolaus Copernicus and Galileo Galilei developed ideas that contradicted Ptolemy's geocentric model of the universe. Copernicus proposed a heliocentric model with the sun at the center, while Galileo's observations through a telescope supported this idea, leading to the eventual acceptance of the heliocentric model.
What was ptolemys evidence for his space theory?
Ptolemy's space theory was based on the geocentric model, which placed the Earth at the center of the universe with all celestial bodies revolving around it. His evidence mainly came from observational data of planetary positions and movements, which he sought to explain using a system of circles and epicycles to account for the perceived motions of celestial bodies.
What is ptolemys view of the univerce?
Ptolemy's view of the universe is that all celestial objects, including planets, stars, the Sun and the Moon orbit the Earth.
