Monday, August 2

Discovery and Exploration of the Solar System – Space Universe Documentary

Discovery and Exploration of the Solar System – Space Universe Documentary

General acceptance of the sun-centered system of celestial motions took several hundred years. The main idea of the solar system was proposed by the Polish astronomer Nicolaus Copernicus (1473-1543) who said that “the Sun is the center of the Universe” and made the planets move around it in perfect circles (in his book entitled, “On the Revolution of the Celestial Spheres”, written in Latin and published in 1543). He thereby revived an ancient idea going back to the Greek philosopher Aristarchos (flourished ~270 B.C.) who suggested that the Sun is much bigger than the Earth and that it, and not the Earth, is at the center of the universe. (Nobody paid much attention to this, since it is plain that the Sun is moving around a lot: once a day across the sky, once a year across the stars at different elevations above the horizon.)