S1 E1 PilotMar 27, 2012 · 44 minStrange flying objects have been caught on NASA’s cameras and astronauts have reported seeing UFOs. Some can be identified; others remain a mystery. We’ll…Episode details →

NASA’s Unexplained Files Shadow Deathstar

S1 E2 Shadow DeathstarMar 2, 2014 · 44 minAstronaut Leroy Chao’s spacewalk is interrupted by bright lights flying past. A flying saucer photographed from the Apollo capsule, dark shapes caught on camera…Episode details →

NASA’s Unexplained Files Alien Death Ray

S1 E3 Alien Death RayMar 6, 2014 · 44 minThe Viking Lander may have found life on Mars, so why don’t we know about it? What is the most destructive force in the…Episode details →

NASA’s Unexplained Files Black Knight Rises

S1 E4 Black Knight RisesMar 11, 2014 · 44 minA chunk of the sun appears to have vanished. An ominous dark craft beneath the Space Shuttle Endeavour. Hubble spots thousands of unidentified objects…Episode details →

NASA’s Unexplained Files Interstellar Gold Rush

S1 E5 Interstellar Gold RushMar 18, 2014 · 44 minA distant planet shows evidence of an Earth-like atmosphere, while a mysterious light suggests an atmosphere on the Moon. Have we found evidence of…Episode details →

NASA’s Unexplained Files Ghosts on the Moon

S1 E6 Ghosts on the MoonJul 20, 2014 · 44 minCould spaceships be powered by atomic bombs? Can artificial rings encircle an entire star? why was Neil Armstrong’s transmission feed cut off when he…Episode details →

NASA’s Unexplained Files Mystery Space Squid

S1 E7 Mystery Space SquidJul 24, 2014 · 44 minWhat could make a NASA astronaut report seeing a flying saucer in the skies above a US Air Force test range? How have the…Episode details →

S2 E1 Life in HellMar 2, 2015 · 60 minA UFO crashes in Pennsylvania. Was it a secret Soviet satellite or something far more dangerous? On Mercury, NASA finds the impossible: frozen water.…Episode details →

NASA’s Unexplained Files Top Secret Terror

S2 E2 Top Secret TerrorMar 4, 2015 · 60 minWas the Moon landing faked? Images of Mercury reveal massive spider-like formations on its surface. Is it a geological formation or something ominous? A…Episode details →

S2 E3 Hammer of ThorApr 22, 2015 · 60 minAre burning lights above Nevada and Utah signs of a secret space weapons project? What are the odd trails on the lunar surface near…Episode details →

NASA’s Unexplained Files Spacewalk of Doom

S2 E4 Spacewalk of DoomApr 29, 2015 · 60 minHow could an astronaut on a spacewalk begin to drown? Have NASA scientists discovered an asteroid that was converted into a spacecraft? What are…Episode details →

NASA’s Unexplained Files Did We Nuke Jupiter?

S2 E5 Did We Nuke Jupiter?May 6, 2015 · 60 minCould NASA be responsible for a nuclear explosion on Jupiter? Could new evidence finally solve the mystery of the iconic face on Mars? What…Episode details →

NASA’s Unexplained Files Nazis on the Moon

S2 E6 Nazis on the MoonMay 13, 2015 · 60 minA Russian probe discovers the lunar soil was disturbed before the US or USSR got there. Did Nazis arrive first? Have scientists detected a…Episode details →

S2 E7 Lethal WeaponsMay 20, 2015 · 60 minHow did pictures from the Hubble telescope make the comet of the century look like an alien spacecraft? Has earth already been invaded by…Episode details →

NASA’s Unexplained Files Revenge of the Fireflies

S2 E8 Revenge of the FirefliesMay 27, 2015 · 60 minSomething in space is attacking the brains of astronauts. What is it? Should NASA be worried about the sudden appearance of so-called space fireflies?…Episode details →

NASA’s Unexplained Files Pluto Under Pressure

S3 E1 Pluto Under PressureFeb 23, 2016 · 60 minLost tapes reveal that Apollo astronauts heard unexplained transmissions on the far side of the moon, an amateur astronomer spots a strange disturbance in…Episode details →

NASA’s Unexplained Files Return of the Moon Bugs

S3 E2 Return of the Moon BugsMar 1, 2016 · 41 minApollo 12 astronauts bring back something alive from the moon and NASA track an asteroid heading towards Earth but make a shocking discovery: it’s…Episode details →

NASA’s Unexplained Files Rise of the Ice Creatures

S3 E3 Rise of the Ice CreaturesMar 8, 2016 · 60 minNeil Armstrong goes into an unexplained spin. He needs to figure out what’s causing it, or he faces certain death. An Apollo 17 photo…Episode details →

NASA’s Unexplained Files Ghosts on a Comet

S3 E4 Ghosts on a CometMar 15, 2016 · 60 minWhen a Chinese moon rover breaks down, a NASA scientist points to a mysterious material that seemed to sabotage the Apollo missions, decades earlier.…Episode details →

NASA’s Unexplained Files The Moon that Disappeared

S3 E5 The Moon that DisappearedMar 22, 2016 · 41 minRecently discovered documents reveal NASA's secret plan B for failure of the first moon landing, a Soyuz capsule carrying astronaut Peggy Whitson back to…Episode details →

NASA’s Unexplained Files Curse of the Red Planet

S3 E6 Curse of the Red PlanetMar 29, 2016 · 60 minThree cosmonauts die mysteriously as they re-enter Earth's atmosphere. A declassified document reveals a CIA plan to use a space disaster as a cover…Episode details →

NASA’s Unexplained Files Red Storm Rising

S3 E7 Red Storm RisingApr 5, 2016 · 60 minTwo astronauts trapped in the vacuum of space face an agonizing death; the first close up images of Pluto reveal an alien landscape, and…Episode details →

NASA’s Unexplained Files Attack of the Thunderballs

S3 E8 Attack of the ThunderballsApr 12, 2016 · 60 minAstronauts are evacuated when a mystery object is discovered hurtling towards the ISS, a NASA secret agent goes undercover to recover missing moon rocks…Episode details →

NASA’s Unexplained Files Pluto's Stranger Things

S4 E1 Pluto's Stranger ThingsAug 30, 2016 · 60 minAstronomers find evidence for incredible alien technology around a distant star. The first pictures of Pluto may show something moving across its surface. Apollo…Episode details →

NASA’s Unexplained Files Rise of the Planet Killer

S4 E2 Rise of the Planet KillerSep 6, 2016 · 60 minA probe captures an image of a strange structure on Mars. Files from the first Apollo mission record an eerie sighting on the dark…Episode details →

NASA’s Unexplained Files A President's Close Encounter

S4 E3 A President's Close EncounterSep 13, 2016 · 60 minGeysers are discovered on a frozen moon, and NASA redirects a probe on a daring mission to detect evidence of life. An unidentified object…Episode details →

NASA’s Unexplained Files The Earth Next Door

S4 E4 The Earth Next DoorSep 20, 2016 · 60 minAstronomers detect a potentially habitable planet tantalizingly close to Earth. A chance discovery at NASA reveals a top secret military space program. The Apollo…Episode details →

NASA’s Unexplained Files Curse of the Full Moon

S4 E5 Curse of the Full MoonSep 27, 2016 · 60 minTwo cosmonauts fight for their lives while trapped inside a capsule in a frozen lake. A NASA scientist investigates the deadly Nazi secret that…Episode details →

NASA’s Unexplained Files Did Earth Have Two Moons?

S4 E6 Did Earth Have Two Moons?Oct 4, 2016 · 60 minA discovery suggests the hellish clouds of Venus may be the origin of life on Earth. A bizarre sighting 2,000 years ago raises the…Episode details →

NASA’s Unexplained Files Mystery of the Invisible Planet

S4 E7 Mystery of the Invisible PlanetOct 11, 2016 · 60 minA probe carrying a message to aliens malfunctions as it enters deep space. A NASA mission goes disastrously wrong when an imposter breaches Mission…Episode details →

NASA’s Unexplained Files Mars's Deepest Secret

S4 E8 Mars's Deepest SecretOct 18, 2016 · 60 minBritish astronomers working for the CIA intercept Soviet photos of the moon. A malfunction on the ISS could poison its crew with ammonia gas.…Episode details →

NASA’s Unexplained Files JFK UFO Conspiracy

S5 E1 JFK UFO ConspiracyApr 12, 2017 · 60 minA declassified letter written by President Kennedy demands the CIA share its UFO data with NASA. A bizarre pattern on the surface of Mars…Episode details →

NASA’s Unexplained Files Curse of the Gas Giant

S5 E2 Curse of the Gas GiantApr 19, 2017 · 60 minJupiter is far hotter than it should be, and scientists don't understand why. The Curiosity Rover finds something strange on Mars. Could it be…Episode details →

NASA’s Unexplained Files The Sun's Evil Twin

S5 E3 The Sun's Evil TwinJan 6, 2018 · 60 minTwo suns are photographed in the Indonesia sky -- a trick of the light or a sighting of our Sun's evil twin? Scientists are…Episode details →

S5 E4 Secret AliensJan 13, 2018 · 60 minAn astronomer records an unusual signal from a distant star. FBI agents find classified documents at the home of a NASA scientist. When scientists…Episode details →

NASA’s Unexplained Files Stonehenge on Mars

S5 E5 Stonehenge on MarsJan 20, 2018 · 60 minWhen NASA spots a something on Mars that resembles Stonehenge, they investigate what could have made this strange structure. Scientists discover a mysterious hole…Episode details →

NASA’s Unexplained Files CIA's Secret Revenge

S5 E6 CIA's Secret RevengeJan 27, 2018 · 60 minWhen the Soviet Union unveils its own space shuttle, the CIA hatches a secret revenge plot. Recent discoveries shed new light on the destruction…Episode details →

NASA’s Unexplained Files The Moon's Strange Secret

S5 E7 The Moon's Strange SecretFeb 3, 2018 · 60 minThe last humans to walk on the Moon discover something strange on the surface. A NASA scientist investigates a strange phenomenon responsible for horrific…Episode details →

NASA’s Unexplained Files Saturn's Death Star

S5 E8 Saturn's Death StarFeb 10, 2018 · 60 minA mysterious object is orbiting Saturn, and it looks just like the Death Star. New evidence might shed new light on the mysterious death…Episode details →

NASA’s Unexplained Files Saturn's Moon Monsters

S6 E1 Saturn's Moon MonstersApr 11, 2019 · 60 minWhen NASA discovers something strange on Saturn's biggest moon, experts investigate if aliens feeding on the electric atmosphere could be the culprit. The disturbing…Episode details →

NASA’s Unexplained Files Aliens vs. Stalin at Area 51

S6 E2 Aliens vs. Stalin at Area 51Apr 18, 2019 · 60 minWhen a former Area 51 insider alleges that the Roswell UFO incident was a nefarious Soviet conspiracy masterminded by Stalin, experts investigate if it…Episode details →

NASA’s Unexplained Files The Black Hole Next Door

S6 E3 The Black Hole Next DoorApr 25, 2019 · 60 minWhen astronomers discover a rogue black hole speeding through the Milky Way, they investigate how much danger this cosmic monster poses to Earth, and…Episode details →

NASA’s Unexplained Files Pluto's Evil Twin

S6 E4 Pluto's Evil TwinMay 2, 2019 · 60 minAfter 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…Episode details →

NASA’s Unexplained Files Aliens in the Amazon

S6 E5 Aliens in the AmazonMay 9, 2019 · 60 minAfter Neil Armstrong's moonwalk, he led an expedition to the Amazon to find a legendary library that holds all knowledge of an advanced alien…Episode details →

NASA’s Unexplained Files Secrets of the Alien Signals

S6 E6 Secrets of the Alien SignalsMay 16, 2019 · 60 minWhen NASA begins a strange experiment to communicate with dolphins, experts investigate if it's a prelude to making alien contact. But some fear that…Episode details →

NASA’s Unexplained Files Planet of the Metal Aliens

S6 E7 Planet of the Metal AliensMay 16, 2019 · 60 minExperts investigate if a nearby exoplanet could be the home to a alien civilization of strange, metallic monsters, after a new discovery confirms that…Episode details →

NASA’s Unexplained Files Did Aliens Nuke Mars?

S6 E8 Did Aliens Nuke Mars?May 23, 2019 · 60 minA strange discovery by NASA's Mars Curiosity rover suggests the Red Planet was home to an alien nuclear war 300 million years ago. Experts…Episode details →

NASA’s Unexplained Files

Seasons & Episodes

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