The case and discs appear unused without marks, scuffs, or scratches. Topic: Science & Mathematics Subtopic: Astronomy Presenter: Professor David M. Meyer The Great Courses - Experiencing Hubble: Understanding the Greatest Images of the Universe(Discs x2) Course Overview A few hundred miles above Earth, there is a remarkable telescope with a crystal-clear view across the universe. For two decades, the Hubble Space Telescope has been amassing discoveries that rival those of history's greatest scientists and explorers, making it the most important and productive scientific instrument ever built. Although it never ventures beyond low-Earth orbit, Hubble's location high above the blurring effects of the atmosphere gives it an unrivaled vantage point for investigating phenomena throughout the cosmos: Comet crash: In 1994, Hubble witnessed a rare solar system cataclysma series of comet strikes on Jupiter that produced Earth-sized plumes of vaporized debris in the giant planet's atmos