First space station was crashed intentionally after 175 days
On April 19, 1971, the USSR launched Salyut-1, the first-ever space station to mark a decade of launching the first man in space, Yuri Gagarin. The first designated crew docked after five days but had to return without entering it due to a faulty hatch. The 18,425-kg station was intentionally crashed into the Pacific Ocean 175 days after its launch.