Russian astronauts encounter strange beings up in space in this collection of scenes from "Russia's Secret Files." #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: http://histv.co/SubscribeHistoryYT Find out more about the show and watch full episodes on our ...

Some say that ancient coil-shaped artifacts found in Russia’s Ural Mountains may be evidence of a past advanced civilization in this clip from Season 11, Episode 12, "Russia's Secret Files". #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: ...

Cosmonauts aboard the Russian space station Salyut 7 report having seen creatures reminiscent of angels in space in the past in this clip from Season 11, Episode 12, "Russia's Secret Files". #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: ...