Star Trek: The Original Series the 23rd century bearing a crew dedicated to exploring the Milky Way Galaxy. Roddenberry noted a number of influences on his idea, some of which includes A. E. van Vogt's tales of the spaceship "Space Beagle", Eric Frank Russell's "Marathon" series of stories, and the film "Forbidden Planet" (1956). Some have also drawn parallels with the television series "Rocky Jones, Space Ranger" (1954), a space opera which included many of the elements that were integral to "Star Trek"—the organization, crew relationships, missions, part of the bridge layout, and some technology. Roddenberry also drew heavily from C. S. Forester's Horatio Hornblower
Star Trek: The Next Generation (two boxed sets per season), and as with the US releases were in the NTSC format and ordered by production code. The European laserdiscs were released in the PAL format and included the ten two-part telemovies as well as a disc featuring the episodes "Yesterday's Enterprise" and "Cause And Effect". The pilot episode, "Encounter At Farpoint", was also included in a boxed set called "Star Trek: The Pilots" featuring the pilot episodes from "Star Trek: The Original Series", "Star Trek: The Next Generation", "Star Trek: Deep Space Nine", and "Star Trek: Voyager". The first season of the series was released