Ptolemy was an early Greek astronomer, and as most people believed, Ptolemy thought the solar system was geocentric. This meant that Earth was at the center, it was the most important thing, and that all celestial bodies circled it.
Great question: Ptolemy believed that Earth was the center of the universe and that everything revolved around it. He believed that the stars were lights attached to a crystal sphere that spun around the Earth. He thought that the planets traveled on spheres of their own. To account for the more subtle motions, Ptolemy believed that each planet also moved on a smaller sphere - an epicycle. Ptolemy's view of the universe was thought to be valid and current for 1,500 years, until in 1547 Nicolaus Copernicus created the first theory for a heliocentric universe. THAT changed EVERYTHING!!
Ptolemy believed that the Earth is the center of the universe, and that all other objects orbit around it. He devised the Geocentric Theory. Of course, the Geocentric Theory has been proven wrong, and the Heliocentric Theory has been proven correct. (See Heliocentric Theory below)
Ptolemy believed that the Geocentric system was correct, but was proven wrong by Galileo who showed moons which didn't revolve around Earth, but around a different planet.
Basically, he thought that the earth went around the sun and not the sun. :p
The geocentric theory, accepted until Copernicus' heliocentric theory
he believed that the earth was in the center of the solar system
what evidence did ptolemy have for the solar system
Ptolemy contributed to science and astronomy by developing the theory of the Earth. He was the first person to view the solar system as a heliocentric system instead of a geocentric system.
Ptolemy's view of the universe placed the sun, the other solar system planets, and the stars inside a huge rotating sphere centered a point in space close to the earth.
circles
He thought the Earth was the center of the Solar System.
Ask not what Ptolemy thinks of his solar system, but what his solar system thinks of Ptolemy.
what evidence did ptolemy have for the solar system
Ptolemy contributed to science and astronomy by developing the theory of the Earth. He was the first person to view the solar system as a heliocentric system instead of a geocentric system.
Ptolemy's view of the universe placed the sun, the other solar system planets, and the stars inside a huge rotating sphere centered a point in space close to the earth.
circles
Ptolemy
E thought it was weird
Ptolemy.
He thought the Earth was the center of the Solar System.
The difference between Ptolemy's and Copernicus's model was that, Ptolemy's model had the Earth in the middle of the Solar System, with all the other planets (including the Sun and the moons) revolving around it. In Copernicus's model, he had the Sun in the center of the Solar System.
Ptolemy thought the earth was the center of the solar system (Otherwise known as the Geocentric theory) and Copernicus's idea was that the sun was at the center of the solar system (Heliocentric theroy).
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