This is the first lecture from the Modern Scholar course Astronomy I: Earth, Sky and Planets taught by Professor James Kaler.
In this lecture Professor James Kaler puts Earth in perspective within the solar system, the galaxy, and the whole universe. He covers what makes a planet and the diversity of planets in our solar system discussing their size and their distance from the sun. Professor Kaler provides dozens of awe-inspiring facts about our solar system in this fascinating introductory astronomy lecture.
For more information on this course or to get it on audio download check out: Astronomy I: Earth, Sky and Planets.