Space Shuttle Discovery's reuse record (1984–2011)
Discovery flew 39 missions over 27 years, the most of any orbiter, carrying satellites, the Hubble telescope, and station crews. Each flight still needed months of refurbishment between launches.
Discovery became NASA's most-flown vehicle before retiring in 2011.
Its 39-flight mark stood as the reuse benchmark that Falcon 9 boosters are now closing on.
SpaceX's fleet leader is three flights away from that record, with turnaround measured in weeks, not months.
