In the early 1600s, Johannes Kepler proposed laws of planetary motion. Kepler was able to summarize the carefully collected data of his mentor - Tycho Brahe - with statements that described the motion of planets in a sun-centered solar system.
Kepler.
Kepler
Johannes Kepler was the first to state that planets move in elliptical orbits.
The person who first stated this was Johannes Kepler.
Johannes Kepler in his three laws of planetary motion
I believe that would be Galileo (sp?) However I'm pretty sure Kepler is the one that proved it.
Yes. All planets move in orbit around their host star.
they orbit the sun
That would be the planets around the sun.
The sun's gravity pulls the planets around it.
The planets move in an act of gravity
The planets that make part of the solar system move around the Sun. The huge gravity power of the Sun maintain all planets and moons orbiting around it on an elliptical form.