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Who was Copernicus and what was the heliocentric theory?
He was a Polish mathematician who disagreed with Ptolemy's view that the earth is the center of the universe. The heliocentric theory is the theory that the sun is the center of the universe, not the earth.
What are the geocentric and heliocentric theories of the universe?
The Geocentric or Ptolemaic Model put the earth at the center of the Universe. The Heliocentric Model postulated by Copernicus and, before him, Aristarchus, places the Sun at the center of the Solar System. Galileo's observations proved the validity of the Heliocentric Model.
Who was the first greek to profess a sun centered or heliocentric universe?
Copernicus
What did Copernicus believe about the earth and the sun?
He believed in a heliocentric universe, or a universe where all of the planets revolve around the sun.
What scientist proposed a heliocentric model of the universe and the theory was rejected?
Aristarchus of Samos was the first person (that we know of!) that proposed a heliocentric model of the universe, as early as about 200B.C). His model was rejected mainly because of Aristotle's influence.Copernicus was the next person to propose a heliocentric model of the universe which was published in 1547. although very controversial at that time, this model was the one that caught on.
