Watch NASA's Unexplained Files

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This nonfiction series explores footage and data gathered by NASA that seems to show unexplained phenomena. The series draws on the data itself, as well as interviews with experts to bolster the mystery that surrounds the discoveries. The series debuted on the Science Channel in 2012.

NASA's Unexplained Files is a series that is currently running and has 7 seasons (56 episodes). The series first aired on March 27, 2012.

Where do I stream NASA's Unexplained Files online? NASA's Unexplained Files is available for streaming on Science, both individual episodes and full seasons. You can also watch NASA's Unexplained Files on demand at Amazon Prime, Philo, Amazon, Hulu, Vudu, Microsoft Movies & TV, Google Play, Apple TV, Science Channel online.

Monday 8:00 PM et/pt on Science
7 Seasons, 56 Episodes
March 27, 2012
Documentary & Biography, Mystery
Cast: Christopher Orwoll, Erik Dellums, Bill Birnes, James E. Oberg
Watch Episodes

NASA's Unexplained Files Full Episode Guide

  • Cataclysmic changes in ancient Egypt might have been caused by an extraordinary set of international phenomena, and the latest tech helps identify the supernatural culprit. What experts discover reveals a truth stranger than fiction.

  • A strange discovery by NASA's Mars Curiosity rover suggests the Red Planet was home to an alien nuclear war 300 million years ago, and experts investigate if an extraterrestrial Armageddon transformed an earth-like world into the wasteland we know today.

  • Experts investigate if a nearby exoplanet could be the home to a alien civilization of strange, metallic monsters, after a new discovery confirms that life can thrive on such a strange world.

  • When NASA begins a strange experiment to communicate with dolphins, experts investigate if it's a prelude to making alien contact. But some fear that such a discovery could have apocalyptic consequences.

  • After Neil Armstrong's moonwalk, he led an expedition to 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 mysterious quest.

  • After NASA's New Horizons spacecraft flies by Pluto, it encounters a strange alien world that shuts down the probe's computers, and experts investigate if this mysterious object is an alien spacecraft hiding at the edge of our solar system.

  • 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.

  • When NASA discovers something strange on Saturn's biggest moon, experts investigate if aliens feeding on the electric atmosphere could be the culprit. The disturbing evidence points to a grisly apocalypse if these monsters ever make it to Earth.

  • A mysterious object is orbiting Saturn, and it looks just like the Death Star. New evidence might shed new light on the mysterious death of Yuri Gagarin, the first man in space. When a cuting-edge satellite vanishes, fears of a space war escalate.

  • The last humans to walk on the Moon discover something strange on the surface. A NASA scientist investigates a strange phenomenon responsible for horrific mass deaths. A landmark NASA mission threatens to destroy the reputation of an American hero.

  • 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.

  • When NASA spots something on Mars that resembles Stonehenge, they investigate what could have made this strange structure. Scientists discover a mysterious hole in Saturn's rings. An ancient tribe claims contact with alien visitors.

  • An astronomer records an unusual radio signal from beyond our solar system. FBI agents find classified documents at the home of a NASA scientist. When scientists discover strange DNA in the octopus, they examine if their origins could be alien.

  • Neil Armstrong goes into an unexplained spiral; an Apollo 17 picture seems to reveal a US military outpost on the Moon; possible alien life dwelling in the oceans of Jupiter's moons.

  • Counting down the most terrifying moments and the strangest and most mysterious phenomena in NASA's history.

  • A declassified letter written by President Kennedy requires the CIA to share its UFO data with NASA. A bizarre pattern on the surface of Mars could be a coded alien message. Investigators are stunned to find a rocket crash-landed in a crater on the Moon.