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NASA's Unexplained Files

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NASA's task of reaching beyond the bounds of Earth has uncovered disturbing anomalies that have perplexed even the finest scientific minds. Science Channel digs into the space agency's archives to reveal countless mysteries and unusual encounters, discoveries and sightings. Each hourlong episode scrutinizes evidence, explores possible explanations, and considers testimony from NASA insiders, scientists, astronauts and others who have witnessed the strange phenomena. The stories are made all the more unusual since they come from the most credible scientific organization in the world.

Latest episodes

aired 426 days ago
After Neil Armstrong's moonwalk, he leads an expedition into the Amazon to find a legendary library that holds all knowledge of an advanced alien civilization; experts ask if a close encounter on the moon's surface inspired Armstrong's quest.
aired 428 days ago
When a former Area 51 insider alleges that the Roswell UFO incident was a nefarious Soviet conspiracy masterminded by Stalin, experts investigate if it was indeed an enemy plot against America -- or if the confession is just another cover-up.
aired 428 days ago
A declassified letter written by President Kennedy demands that the CIA share its UFO data with NASA; a bizarre pattern on the surface of Mars could be a coded alien message; investigators find a rocket crash-landed in a crater on the Moon.
aired 428 days ago
Neil Armstrong enters an unexplained spin; an Apollo 17 photo seems to show a US military outpost on the Moon; possible alien life swimming in the oceans of Jupiter's moons.
aired 428 days ago
When the Soviet Union unveils its own space shuttle, the CIA hatches a secret revenge plot; recent discoveries shed new light on the destruction of Sodom and Gomorrah; a missing nuclear weapon could threaten a NASA base in the Arctic.
aired 428 days ago
A Russian probe uncovers something has disturbed the lunar soil before the US or the USSR got there; scientists may have detected a laser signal from a planet capable of supporting life.
aired 428 days ago
What was thought to be a secret Soviet satellite could have been a UFO crashing in Pennsylvania; NASA makes an unbelievable discovery, frozen water on Mercury.
aired 428 days ago
After NASA's New Horizons spacecraft flies by Pluto, it encounters a strange alien world that shuts down the probe's computers; experts investigate if the mysterious object is an alien spacecraft hiding at the edge of the solar system.
aired 428 days ago
When astronomers discover a rogue black hole speeding through the Milky Way, they investigate how much danger this cosmic monster poses to Earth, and what would happen if it ever entered our solar system.

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