Space flight participant (Russian: Участник космического полёта, uchastnik kosmicheskogo polyota) is the term used by the U.S. National Aeronautics and Space Administration (NASA), the Russian Federal Space Agency (RKA), and the U.S. Federal Aviation Administration (FAA) for people who travel into space, but who are not professional astronauts. Other terms used for space travelers who are not career astronauts include NASA's Payload Specialist and the RKA's Researcher-Cosmonaut.