The Dark Secrets of Space Exposed (Documentary)

What if some space missions were erased from history? The "Lost Cosmonaut" theory suggests that before the first official spaceflights, the Soviets conducted secret missions, with unconfirmed radio transmissions hinting at failed attempts and unexplained losses. NASA also faced unexplained incidents, like Apollo 1’s tragedy and reports of the Apollo 20 mission—a classified U.S.-Soviet operation involving a potential alien discovery on the Moon. Other secretive projects include Project Horizon, the X-20 Dyna-Soar spaceplane, and the mysterious Black Knight Satellite. Even Mars missions weren’t immune; probes like Mars 6 and Phobos 2 vanished after documenting strange anomalies. Could these failures hide something more significant, like extraterrestrial encounters or classified discoveries? The unanswered questions leave us wondering what the space agencies have truly kept secret over the years.