robit_lover t1_j5ufqj9 wrote
Reply to comment by akriti12_ in In 1971, three cosmonauts Dobrovolski, Volkov, and Patsayev passed away due to a valve malfunction in the Soyuz 11 capsule. They remain the only people who have passed away above the Kármán Line - the defining line of space. by sciencekenyon
A valve opened and let all the air out.
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