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Why is heliocentric and geocentric a theory?
A geocentric theory is one that states the universe is centered by Earth. Geo means earth. The old Ptolemaic Model of the universe has earth as the center. A heliocentric theory is one that is centered by a source of heat. Helio = heat. It basically states that the sun is the center of our galaxy. (Copernican Model)
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.
What is a sun - centered model?
The Heliocentric theory.
What were Nicolas Copernicus' likes and dislikes?
Oh, dude, Copernicus was all about that heliocentric model, you know, like the sun being at the center of the solar system and all. He totally disliked the idea of Earth being the center of everything, like, so last season. I mean, who wants to revolve around Earth when you can revolve around the sun, right?
What are the contributions of Eudoxus in geocentric theory?
He created a model for the universe that explained retrograde motion if Earth was at the centre.
