LauncherOne

LauncherOne is a two-stage orbital launch vehicle (see launch vehicle) developed and flown by Virgin Orbit. It was in development from 2007 to 2020. It is an air-launched rocket. It carries a smallsat payloads of up to into Sun-synchronous orbit (SSO).
The first successful flight was on 17 January 2021. LauncherOne was the first all liquid-fuelled air-launched orbital rocket. A test flight was unsuccessful on 25 May 2020, when the rocket failed to reach space.