it was nicolaus copernicus
Copernicus. Aristarchus of Samos was the first known to present the notion of the heliocentric model in 3rd century BC, but Copernicus (whose contributions are considered to be the beginning of modern astronomy) is most famous for championing this model in the 16th century.
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The geocentric model, also known as the Ptolemaic system, held for over a thousand years. It was standardized by the Greek astronomer Ptolemy. Based on his model, the Earth was at the center of the universe and the sun and planets revolved around it. It was the accepted model up until the 1500's when Copernicus put forth is heliocentric model, one that placed the sun at the center and the planets in orbit or it.
Johannes Kepler produced the model of the solar system that is used today. His work, published in 1609, was based on observations of the planets' positions made by Tycho Brahe using new equipment of higher accuracy than ever before. Kepler departed from the old models of Ptolemy, Copernicus and Tycho which used circles and epicycles, and hit on the idea of ellpitical orbits for the six known planets. His model showed excellent agreement with the observations, which pleased Kepler but he had no idea why this was so. About 80 years later Newton's laws of motion and law of gravity were published and he was able to show that an object under the inverse-square law of gravity must follow an elliptical orbit. It was appreciated that the planets must move in their elliptical orbits under the Sun's gravity, and Kepler's model was generally accepted.
It was the model devised by Copernicus.
it was nicolaus copernicus
Nicolaus Copernicus.
Nicolaus Copernicus
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Johannes Kepler whose new theory was published in 1609.
The ancient Greek astronomer Aristarchus is the earliest person known to have written about the heliocentric model of the solar system. Ideas like this do not emerge in a vacuum; there are other, earlier observers whose names have not survived the 23 centuries since, who shared or contributed to the concept. Aristarchus' ideas were not without some controversy; the Stoic philosopher Cleanthes wanted Aristarchus tried on charges of heresy. And the math-heavy idea-driven concept of the heliocentric theory was considerably at odds with the "You can see it with your own eyes!" geocentric model argued by Aristotle. Like modern politicians, Aristotle was a good debater, whose simple explanations persuaded people to adopt obviously-true ideas that would not be proven false for another 15 centuries. And yet in astronomy, in medicine, in physics, in chemistry, in everything Aristotle wrote about, his ideas were wrong-headed and blind. After Aristotle, it took 1800 years for Copernicus to revive the heliocentric model of the solar system.
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Edwin Hubble.
Stephen Hawking does (not did, for he is still alive) believe in the heliocentric model of the solar system. No scientist has seriously considered the geocentric model for centuries.
Copernicus. Aristarchus of Samos was the first known to present the notion of the heliocentric model in 3rd century BC, but Copernicus (whose contributions are considered to be the beginning of modern astronomy) is most famous for championing this model in the 16th century.
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