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Google Tech Talk December 15, 2009 ABSTRACT Presented by Dr. John Hunter, President of Quicklaunch, Inc. Quicklaunch is dedicated to launching rocket propellant and other consumables into orbit using a hydrogen gas gun. Quicklaunchers are related to the SHARP launcher, originally at Lawrence Livermore National Laboratory. More than 90% of the mass required for manned Mars and Lunar exploration is propellant. The Quicklaunch breakthrough will result in costs less than 0/lb to propellant depots in Low Earth Orbit. These low costs will enable manned space exploration of the solar system in our lifetime. Johns talk will include the history of gun launch to space, from the popularizers to the practitioners. A brief physics overview will be given on hydrogen gas guns as well as electric guns. An animation will portray a Quicklauncher delivering propellant to a depot in Low Earth Orbit. There will be plenty of time for questions and answers.