SpaceX's droneship, Just Read The Instructions, achieved its 100th successful landing during a recent mission.The droneship was first deployed in 2016 and had a rough start when a landing leg problem caused a tip-over and explosion.Since then, the droneship has been repaired and used for missions launched from the East Coast.SpaceX's droneships play a crucial role in the successful landing and reuse of Falcon 9 boosters.