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 300 kg (660 lb) 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.
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