T.L. Keller is the author of The Total Novice’s Guide to UFOs: What you need to know…. Keller is an aerospace engineer who has always has an interest in space exploration and extraterrestrial intelligence. He was a computer systems analyst at NASA’s Jet Propulsion Laboratory in Pasadena, California, where he developed a computer system for the management of resources for JPL's interplanetary exploration projects. His experience in the aerospace and construction industries led to the development of Space MAX: Space Station Construction Simulator, a project management simulator for the construction of the first commercial space station. He has also worked for Douglas Aircraft and British Aerospace.