Falcon 9 is a partially reusable medium-lift launch vehicle that can carry cargo and crew into Earth orbit, designed, manufactured and launched by American aerospace company SpaceX. It can also be used as an expendable heavy-lift launch vehicle. The first Falcon 9 launch was on 4 June 2010. The first Falcon 9 commercial resupply mission to the International Space Station (ISS) launched on 8 October 2012. In 2020 it became the first commercial rocket to launch humans to orbit and remains the only such vehicle. It is the only U.S. rocket certified for transporting humans to the ISS. In 2022, it became the U.S. rocket with the most launches in history and with the best safety record, having suffered just one flight failure.
A Falcon 9 lifting off from LC-39A, carrying Demo-2
Falcon 9 flight 20 historic first-stage landing at Cape Canaveral, Landing Zone 1, on 21 December 2015
A Falcon 9 v1.0 being launched with a Dragon spacecraft to deliver cargo to the ISS in 2012
The launch of the first Falcon 9 v1.1 from SLC-4, Vandenberg AFB (Falcon 9 Flight 6) in September 2013
A reusable launch vehicle has parts that can be recovered and reflown, while carrying payloads from the surface to outer space. Rocket stages are the most common launch vehicle parts aimed for reuse. Smaller parts such as rocket engines and boosters can also be reused, though reusable spacecraft may be launched on top of an expendable launch vehicle. Reusable launch vehicles do not need to make these parts for each launch, therefore reducing its launch cost significantly. However, these benefits are diminished by the cost of recovery and refurbishment.
Recovery of Falcon 9 first-stage booster after its first landing
McDonnell Douglas DC-X used vertical takeoff and vertical landing
Scaled Composites SpaceShipOne used horizontal landing after being launched from a carrier airplane
Falcon Heavy side boosters landing during 2018 demonstration mission.