The crew rendezvoused with Skylab on the fifth orbit. After making substantial repairs, including deployment of a parasol sunshade which cooled the inside temperatures to 23.8 degrees C (75 degrees F), by June 4 the workshop was in full operation. In orbit the crew conducted solar astronomy and Earth resources experiments, medical studies, and five student experiments; 404 orbits and 392 experiment hours were completed; three EVAs totaled six hours, 20 minutes.

Note on Mission Numbers The mission number on the Skylab missions causes some confusion. Officially the launch of the unmanned station was designated "Skylab 1". The subsequent crew assignments were designated Skylab 2, Skylab 3, and Skylab 4.

Notice that even though it was designated "Skylab 2" the mission patch carries the Roman numeral I (1).