Nicholas Copernicus is believed to be the first to propose the heliocentric model of the solar system, as it is called. However, the real proof was observed by Galileo Galilei. Using the telescope he greatly improved, he observed that Venus goes through all of the phases, just like the moon. If Venus and the sun were orbiting Earth, that would be impossible.
went* Galileo
Issac Newton shortly after discovering the gravity theory
Copernicus was one of the first to advance the heliocentric theory of the universe. In other words, he realized that the Earth revolves around the Sun. Until that point, it was assumed that the Sun and planets revolved around the Earth.
Ptolemy thought the earth was the center of the universe, so that the stars, the other planets and the sun revolved around the earth; Copernicus realized that for the orbits of the planets to make sense, the earth and the other planets had to revolve around the sun.
The planets orbit (travel) around the Sun.
Nicolaus Copernicus was the first to formulate the theory that placed the Earth and other planets rotating around the Sun.
It was Nicolaus Copernikus. Type it into Wikipedia for more info.
Kepler's 1st law states that the orbits of the planets around the sun and makes an ellipse. This is taught in astronomy.
Planets circle in an elliptical orbit around the Sun.
Planets travel around the Sun in elliptical orbits due to the gravitational pull of the Sun. This gravitational force keeps the planets in their respective paths, causing them to move in a continuous loop around the Sun. The speed at which a planet travels around the Sun depends on its distance from the Sun and the mass of the Sun.
Circle around the sun some say the sun circles the planets but it does not
Galileo