Lost Cosmonauts: The Alleged Soviet Flights Before Gagarin
Alleged intercepted distress calls, missing names and Soviet secrecy fed claims of human spaceflights erased before Yuri Gagarin. Museum and NASA histories distinguish test mannequins, a concealed ground-training death and known flight losses. Technical and linguistic examinations ask what the radio recordings can actually identify. The existence of hidden information is documented; a particular unacknowledged fatal orbital mission still needs its own corroborating evidence.