Falcon 9 is a family of two-stage-to-orbit launch vehicles, named for its use of nine engines, designed and manufactured by SpaceX. The Falcon 9 versions are the Falcon 9 v1.0 (retired), Falcon 9 v1.1 (retired), and the current Falcon 9 full thrust, a partially-reusable launch system. Both stages of this two-stage-to-orbit vehicle are powered by rocket engines that burn liquid oxygen (LOX) and rocket-grade kerosene (RP-1) propellants. The first stage is designed to be reusable, while the second stage is not reusable. The three Falcon 9 versions are in the medium-lift range of launch systems. The current Falcon 9 (full thrust) can lift payloads of to low Earth orbit, and to geostationary transfer orbit.