Vast is a privately held American aerospace company headquartered in Long Beach, California. It was founded in 2021 by entrepreneur Jed McCaleb with the goal of developing artificial gravity space stations to "expand humanity beyond the solar system".

A space station is a spacecraft capable of supporting a human crew in outer space for an extended period of time and is therefore a type of space habitat. It lacks major propulsion or landing systems. An orbital station or an orbital space station is an artificial satellite. Stations must have docking ports to allow other spacecraft to dock to transfer crew and supplies. The purpose of maintaining an orbital outpost varies depending on the program. Space stations have most often been launched for scientific purposes, but military launches have also occurred.