Learn about some of the major cosmological models that scientists through the ages have assigned to our universe, even when the known universe was only as big as our solar system. I talk about Claudius Ptolemy, Al-Hasan Ibn al-Haytham, Nicolaus Copernicus, *dreamy sigh* Tycho Brahe, Johannes Kepler, Galileo Galilei, Giordano Bruno, René Descartes, Sir Isaac Newton, Pierre-Simon Laplace, Albert Einstein, Edwin Hubble, and finally the most common cosmological model accepted today (because it wouldn't be current science if everyone agreed on it).