Aristotle had thought that the Earth was the Geo-centric or the center of the universe and everything circled or revolved around it. Copernicus thought that the Sun is the center of the universe. Copernicus' idea is called Helios-centric.
Nicolaus Copernicus proposed a heliocentric model of the solar system, which deviated from the geocentric model in the Ptolemaic system. In Copernicus' model, the Sun, not Earth, was at the center of the universe, with the planets, including Earth, revolving around it.
Ptolemy and Copernicus' ideas about the universe are different from each other in the sense that Ptolemy thought that every celestial object as well as the sun and the moon orbited the Earth whereas Copernicus had the thought that all planets orbited the Sun, while the Moon orbited the Earth.
In 1543, Copernicus published a book about a new idea he had. Most pople in his day thought that the Earth was the centre of the Universe. But, Copernicus disagreed. according to him, the Universe is not centred around the Earth, but the Earthis actually a planet circling the Sun.
Nicolaus Copernicus, in 1543 , proposed his version of the heliocentric (Sun-centered) organization of the universe.(from De revolutionibus orbium coelestium)Finally we shall place the Sun himself at the center of the Universe.All this is suggested by the systematic procession of events andthe harmony of the whole Universe, if only we face the facts,as they say, 'with both eyes open'.
I believe the first person to position the sun at the center of our solar system was Copernicus during the Renaissance, Years before this many astronomers believed that the Earth was the center of the Universe.
Nicolaus Copernicus
Aristotle had thought that the Earth was the Geo-centric or the center of the universe and everything circled or revolved around it. Copernicus thought that the Sun is the center of the universe. Copernicus' idea is called Helios-centric.
Copernicus took the Earth from it's traditional position in the centre of the universe and stated that it must orbit the sun like the other planets. This is the basis for our current understanding of the solar system.
Nicolaus Copernicus challenged the geocentric theory and presented the heliocentric theory. The heliocentric system placed the sun at the center of the universe.
Copernicus proved to mankind that the sun was the center of the universe, not the Earth. We know now that he was mostly correct. The sun is the center of the solar system.
Nicolae Copernicus did not abandon the idea that planets went around their center point in perfect circles.
Copernicus mistakenly thought that our earth was the center of our universe, with the sun and other planets orbiting earth.
Nicolaus Copernicus proposed a heliocentric model of the solar system, which deviated from the geocentric model in the Ptolemaic system. In Copernicus' model, the Sun, not Earth, was at the center of the universe, with the planets, including Earth, revolving around it.
Nicolas Copernicus believed that the sun was the center of the solar system. Before that most believed that the Earth was the center of the universe.
Nicolas Copernicus developed the model of the solar system that says that the sun is the center of the universe and that all of the other planets are orbiting it.
Ptolemy and Copernicus' ideas about the universe are different from each other in the sense that Ptolemy thought that every celestial object as well as the sun and the moon orbited the Earth whereas Copernicus had the thought that all planets orbited the Sun, while the Moon orbited the Earth.