A star base is a facility where starships are maintained and resupplied, and crews can relax. A star base can be a research station, a military base, a place for interstellar trade or a seat of administration.
Some star bases are also involved in the construction of starships. Star bases offer various services to vehicles, from medical facilities to full-fledged spacedocks capable of refitting a starship.
Star bases can be partially or completely located on a planet surface, or be limited to strictly spaceborne installations. Some are a combination of a ground-based facility with orbital components.
The term star base is often specifically used to refer to Federation Star Fleet bases. Federation star bases are usually commanded by a flag officer, and fulfill a major supporting role in Star Fleet. They coordinate starship operations and provide supplies and maintenance to Federation starships. Some star bases, like Deep Space 9, are jointly operated by local governments.
Major Federation star bases are numbered sequentially, totaling more than 700 in the 2360s.
Besides the numbered star bases, Star Fleet also operates so-called "Deep Space" outposts, usually located outside Federation territory or in the interstellar void.