Falcon 9 is a family of two-stage-to-orbit launch vehicles designed and manufactured by SpaceX. The Falcon 9 versions are the Falcon 9 v1.0 (phased-out), Falcon 9 v1.1 (current version, expendable), and the Falcon 9-R (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.