The death of three astronauts aboard the Soyuz 11 capsule was the second Soviet space program tragedy in 4 years. To this day, it remains the only time in history that people have died in outer space. 🎥Space Disasters | Smithsonian Channel Aviation Nation

The Secret Failed Soviet Moon Landing: Just as Neil Armstrong was setting foot on the lunar surface on July 20, 1969, the Luna 15 lander was crashing into the other side of the moon. It is a story the Soviets did not want the world to know... | Dark Documentaries