He created a formula and mathematically proved his theory.
Contrary to most people of the 14th Century, Copernicus believed that the Earth revolved around the sun. Galileo later proved Copernicus' theory to be correct.
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.
In physics, theories are not mathematically proved but instead they are compared with physical observations to see if they are correct. Copernicus's theory was not just an idea that the Sun is at the centre, but also a detailed mathematical system of circle and epicycles that provided a model of the planets' orbits. At the time of Copernicus and for a time afterwards, his theory was used to predict the planets' positions, and when the predictions were found to be 'correct', the theory was considered 'proved' . But later Tycho Brahe developed more accurate measurement techniques, and using those he discovered small errors in the predicted positions of the planets. That led to Kepler's work and the discovery of elliptical orbits.
Johannes Kepler
Sir Isaac newton
He created a formula and mathematically proved his theory.
Galileo Galilei was the Italian astronomer who supported Copernicus's theories by using his own observations through a telescope to provide evidence for the heliocentric model of the solar system.
Nicolaus Copernicus was the first to propose a heliocentric model of the solar system in the 16th century, which placed the Sun at the center with planets orbiting around it. Galileo Galilei supported Copernicus's ideas and used his observations through a telescope to provide further evidence for this model in the early 17th century.
Galileo's observations of the gibbous phase of Venus provided evidence supporting the heliocentric model proposed by Copernicus. This was because the changing phases of Venus could only be explained if it revolved around the sun, not the Earth. This observation helped to challenge the geocentric view of the universe.
Contrary to most people of the 14th Century, Copernicus believed that the Earth revolved around the sun. Galileo later proved Copernicus' theory to be correct.
Galileo Galilei made significant contributions to astronomy by observing celestial bodies through a telescope and supporting the heliocentric model of the solar system proposed by Copernicus. He also conducted experiments on motion and gravity, laying the foundation for modern physics. However, his advocacy for heliocentrism and clash with the Catholic Church led to his trial and house arrest.
Humans learned that the Earth was not the center of the universe during the 16th century with the work of astronomers like Nicolaus Copernicus and Galileo Galilei. Copernicus's heliocentric model and Galileo's astronomical observations helped shift the perception of Earth's place in 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.
Copernicus, with the use of the heliocentric theory and Galileo with his telescope proved the planets revolve around the Sun.
Galileo discovered two important things: the moons of Jupiter and the phases of venus. Both discoveries raised doubts about the old Ptolemaic system which was geocentric, and the phases of Venus showed that it was definitely wrong. But neither discovery proved that Copernicus's theory - supported by Galileo - was right. This is because Tycho's geocentric system explained the phases of Venus satisfactorily.
In physics, theories are not mathematically proved but instead they are compared with physical observations to see if they are correct. Copernicus's theory was not just an idea that the Sun is at the centre, but also a detailed mathematical system of circle and epicycles that provided a model of the planets' orbits. At the time of Copernicus and for a time afterwards, his theory was used to predict the planets' positions, and when the predictions were found to be 'correct', the theory was considered 'proved' . But later Tycho Brahe developed more accurate measurement techniques, and using those he discovered small errors in the predicted positions of the planets. That led to Kepler's work and the discovery of elliptical orbits.