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1573 BCE
Johannes Kepler
German astronomer who discovered three major laws of planetary motion, conventionally designated as follows:
(1) the planets move in elliptical orbits with the Sun at one focus;
(2) the time necessary to traverse any arc of a planetary orbit is proportional to the area of the sector between the central body and that arc.
(3) there is an exact relationship between the squares of the planets’ periodic times and the cubes of the radii of their orbits. -
1543 BCE
Nicolaus Copernicus
Nicolaus Copernicus was the first one that said the sun was not moving, is the earth moving around the sun.Therefore, he created a concept of the universe in which the distance between the planets and the sun is proportional to the size of their orbits. At that time, Copernicus’s "Japan-centered" thought caused great controversy.
