A Starship is used on various Science Fiction franchises to travel across the space. Some franchises include Babylon 5, Battlestar Galactica, Star Trek, Stargate, Star Wars, and many others. In Science Fiction there are many ways a Starship can travel faster than light, some examples include: Warp-Drive, Hyper-Drive, Slipstream, or even Starburst.
Faster than light propulsion systems were designed, so that Starships can travel across space in a reasonable time period. Sometimes faster than light propulsion is not possible, so other Starships are considered Generational, or Sleeper ships.