Tycho did as much as could be done with the naked eye, a new technology\nwas required to extend our vision, the telescope. This lecture\nintroduces Galileo Galilei, the contemporary of Kepler who was in many\nways the first modern astronomer, and his discoveries with the\ntelescope. These observations were to electify Europe in the early 17th\ncentury, and begin the final intellectual dismantling of the\nAristotelian view of the world. Galileo's claims that they constituted\nproof of the Copernican Heliocentric System, however, were to bring him\ninto conflict with the Roman Catholic Church. Recorded 2006 Oct 12 in\n100 Stillman Hall on the Columbus campus of The Ohio State University.