Date: 14 May 1973
Skylab was an orbiting laboratory launched by a Saturn V rocket in May 1973.
Skylab was visited three times by NASA astronauts who sometimes stayed as long as two and a half months. Many scientific tests were performed on Skylab, including astronomical observations in ultraviolet and X-ray light. Some of these observations yielded valuable information about comet Kohoutek, our sun and about the mysterious X-ray background -- radiation that comes from all over the sky.
Skylab fell back to earth on 11 July 1979.