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The notion that the Earth and other planets revolved around the Sun was first proposed in the 3rd century BC by Aristarchus of Samos. However, it was not until the 16th century that a fully predictive mathematical model of a heliocentric system was presented, by mathematician and astronomer Nicolaus Copernicus. In the following century, this model was elaborated and expanded by Johannes Kepler and supporting observations made using a telescope were presented by Galileo Galilei.

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Who all believed that the sun the planets and the stars orbited the Earth?

Most people prior to the 1600's. And many people after that too!


What was Copernicus' theory about the sun and planets. how was it different from what people believed before?

Copernicus's theory was called the Heliocentric Theory. It said that the Earth and planets orbited around the sun, and the Sun was the center of the universe. The previous theory, mainly advocated by the Catholic Church, was called the Geocentric Theory; which stated that the Sun and planets orbited around the Earth, and that the Earth was the center of the Universe.


How was Copernicus model of the universe different from ptolemy's?

Copernicus's model thought that the planets orbited the sun. Ptolemy's model thought that the planets orbited the moon.No. The above answer is incorrect.Copernicus's model thought that the planets orbited the sun. Ptolemy's model thought that the planets orbited the EARTH in epicycles. Not the moon. (The model that modeled the planets orbiting earth was the Geocentric model. Aristotle theorized this.)Copernicus's model is known as the Heliocentric model. Ptolemy's theory of epicycles is when the planets revolved in large circles around Earth.


How was Copernicus model of the universe different from Ptolemy's model?

Copernicus's model thought that the planets orbited the sun. Ptolemy's model thought that the planets orbited the moon.No. The above answer is incorrect.Copernicus's model thought that the planets orbited the sun. Ptolemy's model thought that the planets orbited the EARTH in epicycles. Not the moon. (The model that modeled the planets orbiting earth was the Geocentric model. Aristotle theorized this.)Copernicus's model is known as the Heliocentric model. Ptolemy's theory of epicycles is when the planets revolved in large circles around Earth.


How was Copernicus model of the universe different from ptolemys model?

Copernicus's model thought that the planets orbited the sun. Ptolemy's model thought that the planets orbited the moon.No. The above answer is incorrect.Copernicus's model thought that the planets orbited the sun. Ptolemy's model thought that the planets orbited the EARTH in epicycles. Not the moon. (The model that modeled the planets orbiting earth was the Geocentric model. Aristotle theorized this.)Copernicus's model is known as the Heliocentric model. Ptolemy's theory of epicycles is when the planets revolved in large circles around Earth.


What Aristotle's beliefs about the sun?

He believed the sun orbited around the Earth.


What was ptolemy theory on planets?

The astronomical system of Ptolemy, in which the earth is at the center of the universe with the sun, moon, planets, and stars revolving about it in circular orbits.Ptolemaic system Ptolemy believed that Earth was at the center of the universe and that the Sun and planets orbited Earth (with the planets also moving in smaller circles called epicycles). In this system, the centers of Mercury's and Venus's epicycles always lie on the line shown in the diagram between the Earth and the Sun.


What planet has a spacecraft from earth not visited?

All of the eight planets have been visited or orbited by space probes.


What was the old model of the solar system called?

geocentric model, where the sun and other planets orbited the Earth.


Is it true that Brahe was the first astronomer to understand that the planets orbited the sun in an ellipse?

No, Brahe did not believe in the heliocentric model; he proposed a geocentric model where planets orbited the Sun and the Sun orbited the Earth. It was Johannes Kepler who later discovered that planets orbit the Sun in an elliptical path, using Brahe's detailed observational data.


What planets always surrounded the moon?

Moons are not surrounded by planets, planets are surrounded (orbited) by moons.


What was Copernicus view of the solar system?

he thought the sun was in the center of the solar system, and that all the other planets and Earth orbited around it