Star Trek is an American media franchise based on the science fiction television series created by Gene Roddenberry. The first television series, simply called Star Trek and now referred to as "The Original Series", debuted in 1966 and aired for three seasons on NBC. It followed the voyages of the starship USS Enterprise on its five-year mission, the purpose of which was “to explore strange new worlds, to seek out new life and new civilizations, to boldly go where no man has gone before!“. The USS Enterprise was a space exploration vessel built by the United Federation of Planets in the 23rd century. The Star Trek canon includes The Original Series, an animated series, five spin-off television series, the film franchise, and further adaptations in several media.