Skylab 2

Skylab 2 (also SL-2 and SLM-1) was the first crewed mission to Skylab, the first U.S. orbital space station. The mission was launched on a Saturn IB rocket and carried a three-person crew to the station. The name Skylab 2 also refers to the vehicle used for that mission. The Skylab 2 mission established a twenty-eight-day record for human spaceflight duration. Furthermore, its crew were the first space station occupants ever to return safely to Earth.