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Starfleet is a fictional organization in the Star Trek media franchise. Within this fictional universe, Starfleet is a service maintained by the United Federation of Planets as the principal means for conducting deep-space exploration, research, defense, peacekeeping, and diplomacy. While the majority of Starfleet's members are human and it is headquartered on Earth, hundreds of other species are also represented, including the majority of the franchise's protagonists.

Starfleet Command emblem
The flag of Starfleet Command

Starfleet is a fictional organization in the Star Trek media franchise. Within this fictional universe, Starfleet is a service maintained by the United Federation of Planets ("the Federation") as the principal means for conducting deep-space exploration, research, defense, peacekeeping, and diplomacy. While the majority of Starfleet's members are human and it is headquartered on Earth, hundreds of other species are also represented, including the majority of the franchise's protagonists.