SpaceX Falcon 1 (2006–2008)
SpaceX spent its early years trying to put a small liquid-fueled rocket into orbit on a startup budget. The first three launches failed. The fourth, in September 2008, succeeded and made Falcon 1 the first privately developed liquid-fuel rocket to reach orbit.
SpaceX had a working orbital rocket and a NASA contract to keep going.
The company abandoned Falcon 1 for the much larger Falcon 9, which became the dominant launch vehicle in the world.
Falcon 1 showed that a small rocket can be a stepping stone rather than a destination. Rocket Lab is making the same bet with Electron and Neutron.
