SpaceX is attempting to set a new reusability record for its Falcon 9 rocket boosters today with its Starlink 10 mission. The Falcon 9 rocket first stage is designed to land after giving the second stage and payload a boost into space. Reusing first stage boosters helps reduce the cost of spaceflight.
If today’s launch is successful, SpaceX will achieve a new record for itself of reusing a booster for a total of six times. The first stage booster on today’s Falcon 9 rocket has been flown five times prior to today’s mission, with the earliest in September 2018.