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During the Cold War, a spate of mysterious sightings ended up exposing a plot to hide nukes from the US.
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Scientists have identified what they believe to be the landing site of the short-lived Soviet spacecraft.
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A 53-year-old Soviet satellite is expected to fall back down to Earth sometime within the next few days.
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The bonkers plan looked at ways to stop the Earth's rotation so that Soviet nuclear missiles would miss their targets.
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The US journalist and UFO investigator spent time in Soviet Russia to investigate its remote viewing experiments.
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Newly released documents suggest that the Soviet Union was experimenting with telepathic communication.
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On April 12th, 1961, Soviet cosmonaut Yuri Gagarin became the first human ever to venture into outer space.
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New details have emerged of a peculiar Cold War-era phenomenon associated with Soviet missile launches.
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Newly declassified CIA documents have revealed details of a secretive Cold War spy drone that looked like a bird.
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It turns out that there is a possibility, albeit a small one, that Iran's Navy includes trained dolphin assassins.
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A recently declassified CIA intelligence report has helped to shed new light on a 50-year-old UFO mystery.
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The rocks, which were collected by the Soviet Luna 16 mission in 1970, have doubled in value since 1993.
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In 1951, an encounter with a strange object near Seoul inflicted an entire company with radiation sickness.
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Former Soviet military officer Stanislav Petrov made a decision in 1983 that may have saved the world.