the first US space station. It was used in the early 1970s for scientific research by three different groups of three astronauts. In 1979 Skylab fell to earth in pieces which landed in the Indian Ocean and Australia without causing any damage. 美国第一个太空站。在1970年代初期,三个不同的三位宇航员小组将其用于科学研究。1979年,Skylab坠落在碎片中,并降落在印度洋和澳大利亚,未造成任何损害。