Space shuttle Atlantis returns from it’s 11-day delivery mission and lands safely at the Kennedy Space Center in Florida.

The Atlantis’ seven-man crew delivered mission-critical spare parts to keep the international space station afloat.

NASA said the parts the crew delivered will add years to the station’s life after the space shuttle fleet is retired next year.

Some of the parts are for systems that keep the station from overheating or tumbling through space, NASA said.