Each Skylab mission set a record for the amount of time astronauts spent in space.

The study of coronal bright points, first observed extensively during the Skylab mission, is also being significantly advanced.

The Skylab missions were the first missions that extended past several days in duration.

Skylab 4 was the last Skylab mission, and the first workers strike in space.

Kerwin, a veteran of the Skylab 2 mission, had been commissioned to undertake the study soon after the accident.

His first spaceflight, the Skylab 3 mission in 1973, set a world record for duration of approximately 60 days, more than double the previous record.

Mission featured most detailed and interrelated physiological measurements in space since 1973-1974 Skylab missions.

These coronal holes were later confirmed by the Skylab mission.

This was a personal record that stood until the Skylab 3 mission in July through September of 1973.

The Skylab 2 mission established a record for human spaceflight duration.