NASA's Unexplained Files
For centuries, mankind has looked to the skies and wondered, "are we alone in the universe?" In one month SCIENCE partners with TED and SETI Institute (Search for Extraterrestrial Intelligence), to enlist like-minded individuals everywhere to tackle this defining question with ARE WE ALONE?, a breakthrough multimedia initiative. ARE WE ALONE? is timed to support a major new resource called SETI Live which will empower and mobilize "citizen scientists" from all walks of life to join the search for extraterrestrial intelligence.
Where to Watch NASA's Unexplained Files
Where to stream every episode from all 5 seasons of NASA's Unexplained Files. Filter these episodes by what's available to watch free or on your streaming services using the tabs above.
Season 1Destination Unknown | Science | Rent or Buy
S01 E01Mar 3, 2014
Pilot Mar 3, 2014 Strange flying objects have been caught on NASA’s cameras and astronauts have reported seeing UFOs. Some of the odd shapes and lights can be identified; others remain a mystery. We’ll reveal NASA footage and interview the astronauts and scientists.
S01 E02Mar 7, 2014
Shadow Deathstar Mar 7, 2014 Astronaut Leroy Chao’s spacewalk is interrupted by bright lights flying past. A flying saucer photographed from the Apollo capsule, dark shapes caught on camera shadowing the shuttle. The ideas are science fiction, but the incidents are science fact.
S01 E03Mar 12, 2014
Alien Death Ray Mar 12, 2014 The Viking Lander may have found life on Mars, so why don’t we know about it? What is the most destructive force in the universe? How could a Starship be spotted in the Aurora Borealis? And what are NASA’s mysterious Moon Pigeons?
S01 E04Mar 19, 2014
Black Knight Rises Mar 19, 2014 A chunk of the sun appears to have vanished. An ominous dark craft beneath the Shuttle Endeavour. Hubble spots thousands of unidentified objects traveling faster than light. Are we being watched? Or could we ourselves be aliens from another world?
S01 E05Jul 21, 2014
Episode 5 Jul 21, 2014 Could spaceships be powered by atomic bombs? Can artificial rings encircle an entire star? why was Neil Armstrong's transmission feed cut off when he spotted strange lights on the Moon? And how can lightning talk to itself?
S01 E06Jul 25, 2014
Episode 6 Jul 25, 2014 What could make a NASA astronaut report seeing a flying saucer in the skies above a US Air Force test range? How have the swirling gases of Saturn formed a perfect Hexagon that has hovered above the planet's pole for 30 years?
Season 2Destination Unknown | Science | Rent or Buy
S02 E01Mar 3, 2015
Life in Hell Mar 3, 2015 A UFO crashes in Pennsylvania. Was it a secret Soviet satellite or something far more dangerous? On Mercury, NASA finds the impossible: frozen water. A strange object causes a skyscraper-sized shadow on the surface of Mars's largest moon. What is it?
S02 E02Mar 5, 2015
Top Secret Terror Mar 5, 2015 Was the Moon landing faked? Images of Mercury reveal massive spider-like formations on its surface. Is it an odd geological formation or something much more ominous? A classified space shuttle mission ends in near-disaster. What was its mission?
S02 E03Apr 23, 2014
Hammer of Thor Apr 23, 2014 Are burning lights in the skies above Nevada & Utah signs of a secret space weapons project? What are the mysterious trails on the lunar surface near the Apollo landing sites? Does a strange space object spell disaster for the space shuttle crew?
S02 E04Apr 30, 2015
Spacewalk of Doom Apr 30, 2015 An astronaut on a spacewalk begins to drown. How could this terrifying event happen? Have NASA scientists discovered an asteroid that was converted into a spacecraft? What are the strange objects spotted when NASA sends a secret payload into space?
S02 E05May 7, 2015
Black Knight Rises May 7, 2015 Could NASA really be responsible for a nuclear explosion on Jupiter? Could new evidence finally reveal the truth behind the mystery of the iconic face on Mars? What unknown force crashed a spacecraft from the Apollo program into the lunar surface?
S02 E06May 14, 2015
Nazis on the Moon May 14, 2015 A Russian probe discovers something has disturbed the lunar soil before the US or USSR got there. Did Nazis arrive first? Have scientists detected a laser signal from a planet capable of supporting life? Is there really a Bermuda Triangle of Space?