Curated Video
Historical Models
This video explains the history of geocentric and heliocentric models of the solar system.
Professor Dave Explains
History of Astronomy Part 3: Copernicus and Heliocentrism
Once it was determined that the Earth is round, the next step was to decipher the geometry of the solar system. Does everything rotate around the Earth, like in the geocentric model of Ptolemy? We thought so for thousands of years, but...
Crash Course
Crash Course History of Science #12: The Scientific Revolution
So, what exactly is a scientific revolution? Is it more than just moments in time Historians use to mark the beginning and ending of things through time? In this video, explore some ideas and how they fit into science and the search to...
University of Oregon
Electronic Universe: Kepler's Laws of Planetary Motion
From the The Electronic Universe Project web site. This page states and explains Kepler's three laws of planetary motion. Includes some downloadable movie clips and associated sound files. Discusses Ptolemy's attempt to explain...