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On June 29, 1971, a Soviet house mission resulted in tragedy when three Russian cosmonauts have been discovered lifeless inside their spacecraft after returning to Earth. Contained in the Soyuz 11 house capsule have been cosmonauts Vladislav Nikolayevich, Viktor Ivanovich Patsayev, and Georgi Timofeyevich Dobrovolskiy. They have been the one crew to ever board the world’s first house station, Salyut 1. They launched on June 6, 1971 and spent 23 days doing science experiments aboard the house station earlier than heading again to Earth. The reentry appeared to be going in line with plan till the restoration crew opened the capsule. Investigators consider the crew had turn into asphyxiated when a air flow valve rattled open, inflicting the cabin to depressurize.
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