Since June 2010, rockets from the Falcon 9 family have been launched 337 times, with 335 full mission successes, two failures,[a] and one partial success. Designed and operated by SpaceX, the Falcon 9 family includes the retired versions Falcon 9 v1.0, v1.1, and v1.2 "Full Thrust" (blocks 3 and 4), along with the currently active Block 5 evolution. Falcon Heavy is a heavy-lift derivative of Falcon 9, combining a strengthened central core with two Falcon 9 first stages as side boosters.[1]