In this video segment from IdahoPTV's D4K learn the difference between an optical telescope and a reflecting telescope like the Hubble Space Telescope. Discover the benefits of having a telescope in space rather than on earth and the future plans for telescopes in space. What different kinds of cameras are on the Hubble? Enjoy some of the awesome photos that the Hubble has taken in space.
Visit the D4K companion Web site to learn more about Astronomy: D4K: “Astronomy"