Skylab was the first and only American space station to date (I’m not counting the International Space Station because of the cooperation of the 15 other countries in addition to the United States). It suffered from being stuck between two eras; the era of moon exploration and the space shuttle era, and thus was only visited 3 times. The U.S. abandoned Skylab in 1974 after it had no more vehicles capable of reaching the station, and it burned up in the Earth’s atmosphere in 1979. Here are 5 more quirky facts about Skylab.

1. Skylab was the first spacecraft to be inhabited for over 100 days. The crews that visited Skylab remained in orbit for a total of 171 days. They proved that humans could remain in space for an extended period of time.
2. Each Skylab crew set a new spaceflight duration record. The first crew was the first to remain in orbit for four weeks, the second crew was the first to remain in orbit for eight weeks, and the third crew was the first to remain in orbit for twelve weeks.
3. The commander of the first manned Skylab mission was also the 3rd person to walk on the moon. Paul Pete Conrad, commander of the Skylab-2 mission was also the commander of the Apollo 12 mission, which was the second trip to the moon.
4. Skylab was NOT the world’s first space station. The Soviet Union launched Salyut-1, the first manned space station, in 1971. As a matter of fact, the Soviet Union built four space stations before the United States launched Skylab in 1973. One failed to enter orbit and two failed to remain in orbit long enough to send a manned mission to them.
5. Skylab re-entered the Earth’s atmosphere prematurely. Skylab was supposed to remain in orbit for 8-10 years after the last mission in 1974. However, due to unexpectedly high solar activity, Skylab re-entered the Earth’s atmosphere in 1979. When it re-entered, it scattered debris across Western Australia and the eastern part of the Indian Ocean. The Shire of Esperance, a municipal area of southwest Australia, issued NASA a $400 fine for littering, a fine which remain unpaid until 2009.

Skylab is a monument to human achievement. It proved that people could survive in weightlessness for extended periods, and many of the principles of Skylab have been used in successive space stations, including Mir and the International Space Station.