Governmental acronym for NASA's Jet Propulsion Laboratory at the California Institute of Technology in Pasadena. The laboratory is a government sponsored 'think tank' which routinely debunks many alleged UFO incidents and reported encounters with alien beings.
JPL stands for Jet Propulsion labratory. JPL is managed for NASA by the California Institute of Technology. JPL develops robotic devices for exploring the Solar System. JPL's main site is in the San Gabriel Mountains near Pasadena, California.