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Sagot :
Copernicus's model states that the sun is in the center, and that the planets move around it in a circle. Kepler's first law of planetary motion says that they move around the sun in an ellipse.
In the Copernican Model, all planet revolves around the sun in a circular orbit. While on the other hand in Kepler Universe Model, all planet revolves around The Sun but in a flattened circular orbit that means the elliptical orbit.
How Kepler's first law refines the Copernican model:
Copernican system, in astronomy, model of the solar system centered on the Sun, with Earth and other planets moving around it, formulated by Nicolaus Copernicus, and published in 1543. Unlike the older Ptolemaic system, it correctly described the Sun as having a central position relative to Earth and other planets.
In Kepler's first law he said that each planet's orbit about the Sun is an ellipse. The Sun's center is always located at one focus of the orbital ellipse. The Sun is at one focus. The planet follows the ellipse in its orbit, meaning that the planet to Sun distance is constantly changing as the planet goes around its orbit.
Kepler's first law refines the Copernican model because he shows that the planet's orbits do have perihelion and aphelion but they do not have orbits that make a perfect circle. They make ellipses and are more oval.
Learn more about Kepler's first law and Copernican model, refer:
https://brainly.com/question/13326837
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