The Earth and all of the other planets revolve around the sun.
Galileo
Copernicus, Kepler, and Galileo; about 400 years ago
galileo
Galileo is famous for observing and proving his heliocentric model of the universe. After his observation the existing model of the universe was slowly phased out.
Galileo I am not so sure he was the first, but he is the most famous.
Galileo believed in the truth of the copernican theory, which stated that the sun was the center of the universe.
They believed that the Earth was the centre of the universe even after Galileo presented his idea. It was later proven that the sun was the centre of the universe.
Galileo concluded the that the earth wasn't the center of the universe because of how all the stars and planets moved. If the earth was truly the center of the universe, it wouldn't revolve.
He noticed that they were in the shapes of animals.
Galileo found that the earth revolved around the sun and that it wasn't the center of the universe. He invented the telescope.
His Father, for he didn't want Galileo to major in mathmatics, but to major in medicine instead.
The Crime of Galileo posited that the Sun was the center of the universe instead of the Earth. The was directly opposed to the teaching of the Catholic Church, who deemed Galileo a heretic.