kepler determined the planetary orbits were elliptical
Kepler used Tycho Brahe's data to establish the heliocentric theory of the solar system.
Johannes Kepler
Galileo did not have his own theory. He was a supporter of Copernicus's heliocentric theory and an opponent of the geocentric Ptolemaic theory. Eventually both theories were rejected in favour of Kepler's theory. But Kepler's theory uses the heliocentric idea from Copernicus's theory.
Tycho Brahe was a nobleman and a difficult character, and it would have been beneath his dignity to 'work together' with Kepler, one of his employees. Most of Kepler's work was done after Brahe's death when he gained access to the figures from Brahe's detailed high-quality measurements. Kepler used the measurements and assumed the heliocentric idea - the Sun at the centre - to produce his three laws of planetary motion. Many years later Newton's discoveries of the laws of motion and the law of gravity, plus his use of differential calculus, showed why Kepler's laws are as they are, and the heliocentric theory was later generally accepted.
Eventually.
Johanes Kepler was a German astronomer. He revised the heliocentric model by demonstrating that the orbits are ellipses. glad if that helped you out :) xx
Kepler used Tycho Brahe's data to establish the heliocentric theory of the solar system.
heliocentric
Johannes Kepler
Johannes Kepler
Kepler spent his entire adult life trying to figure out what kind of arrangement would be the simplest and most accurate explanation for the motions we actually see in the sky. He tried several of them, and he eventually determined that the best fit was obtained if the planets, including the earth, all moved in elliptical orbits around the sun. That's heliocentric.
Johannes Kepler
i think it's Kepler
Galileo did not have his own theory. He was a supporter of Copernicus's heliocentric theory and an opponent of the geocentric Ptolemaic theory. Eventually both theories were rejected in favour of Kepler's theory. But Kepler's theory uses the heliocentric idea from Copernicus's theory.
Tycho Brahe was a nobleman and a difficult character, and it would have been beneath his dignity to 'work together' with Kepler, one of his employees. Most of Kepler's work was done after Brahe's death when he gained access to the figures from Brahe's detailed high-quality measurements. Kepler used the measurements and assumed the heliocentric idea - the Sun at the centre - to produce his three laws of planetary motion. Many years later Newton's discoveries of the laws of motion and the law of gravity, plus his use of differential calculus, showed why Kepler's laws are as they are, and the heliocentric theory was later generally accepted.
because the work of Tycho and Kepler showed the heliocentric model was more accurate.
Kepler completely replaced Copernicus's theory of the orbits of the planets, which was based on circles an epicycles, with a new theory using elliptical orbits. However Kepler retained Copernicus's idea of placing the Sun at the centre.