Johannes Kepler was the first to state that planets move in elliptical orbits.
That is one of Kepler's Laws, stated by Johannes Kepler.
Ferme
Johannes Kepler stated that the planets moved in elliptical orbits around the sun. This was one of his three laws of planetary motion, which he published in the early 17th century. These laws revolutionized our understanding of the solar system and replaced the previously held idea of circular orbits.
I believe that would be Galileo (sp?) However I'm pretty sure Kepler is the one that proved it.
No. He only came with the idea of a heliocentric model. (Sun-centred) He also stated that the Earth orbited around it.
Kepler
Johannes Kepler stated that the planets revolve around the sun in an ellipse.
The person who first stated this was Johannes Kepler.
That is one of Kepler's Laws, stated by Johannes Kepler.
Johannes Kepler
he stated that planets went around the sun
Galileo Galilei
Johannes Kepler proposed that planets move around the sun in an elliptical orbit through his three laws of planetary motion. This idea was further supported by Isaac Newton's law of universal gravitation, which provided a mathematical explanation for Kepler's laws.
Ferme
Johannes Kepler formulated this idea in his work "Astronomia Nova" in 1609. He described the movement of planets in elliptical orbits with the Sun located at one of the foci.
Darwin
Jabir ibn Hayyan, an Islamic alchemist, stated this fact around the 8th century.