Skylab was the first space station operated by the United States. It spent six years orbiting Earth until its decaying orbit caused it to re-enter the atmosphere. It scattered debris over the Indian Ocean and sparsely settled areas of Western Australia.
Three crews successfully lived on board the station for several months each. The last crew spent 84 days in orbit — an American record that stood until the shuttle era. [Photos: Skylab, the 1st U.S. Space Station]
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