The Lost Cosmonauts or Phantom Cosmonauts are subjects of a conspiracy theory, which alleges that Soviet and Russian space authorities have concealed the deaths of some cosmonauts in outer space. Proponents of the Lost Cosmonauts theory argue that the Soviet Union attempted to launch human spaceflights before Yuri Gagarin's first spaceflight (Vostok 1, 1961), and that cosmonauts onboard died in those attempts.
The Lost Cosmonauts or Phantom Cosmonauts are subjects of a conspiracy theory, which alleges that Soviet and Russian space authorities have concealed the deaths of some cosmonauts in outer space. Proponents of the Lost Cosmonauts theory argue that the Soviet Union attempted to launch human spaceflights before Yuri Gagarin's first spaceflight (Vostok 1, 1961), and that cosmonauts onboard died in those attempts.
Source: Wikipedia "Lost Cosmonauts" · CC BY-SA 4.0
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