7.9/1022 votesLoading...#1 - JFK UFO Conspiracy
Season 5 Episode 1 - Aired 4/12/2017
A declassified letter written by President Kennedy demands the CIA share its UFO data with NASA. A bizarre pattern on the surface of Mars could be a coded alien message. Investigators are shocked to find a rocket crash-landed in a crater on the Moon.
Director: N/A
Writer: N/A
7.8/1018 votesLoading...#2 - Curse of the Gas Giant
Season 5 Episode 2 - Aired 4/19/2017
Jupiter is far hotter than it should be, and scientists don't understand why. The Curiosity Rover finds something strange on Mars. Could it be a lost spacecraft or something far more sinister? Detectives turn to NASA for help with a murder cold case.
Director: N/A
Writer: N/A
7.8/1015 votesLoading...#3 - The Moon's Strange Secret
Season 5 Episode 7 - Aired 2/3/2018
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.
Director: N/A
Writer: N/A
7.7/1028 votesLoading...#4 - Curse of the Red Planet
Season 3 Episode 6 - Aired 3/29/2016
Three 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 to start war and a NASA rover discovers clues that help solve a murder.
Director: N/A
Writer: N/A
7.6/1025 votesLoading...#5 - Red Storm Rising
Season 3 Episode 7 - Aired 4/5/2016
Two astronauts trapped in the vacuum of space face an agonizing death; the first close up images of Pluto reveal an alien landscape, and residents of Houston struggle to explain videos of unidentified flying lights captured above their city at night.
Director: N/A
Writer: N/A
7.6/1022 votesLoading...#6 - Mars's Deepest Secret
Season 4 Episode 8 - Aired 10/18/2016
British astronomers working for the CIA intercept Soviet photos of the moon. A malfunction on the ISS could poison its crew with ammonia gas. A startling image taken by a NASA probe points to evidence that life could exist on Mars.
Director: N/A
Writer: N/A
7.6/1015 votesLoading...#7 - CIA's Secret Revenge
Season 5 Episode 6 - Aired 1/27/2018
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.
Director: N/A
Writer: N/A
7.6/1022 votesLoading...#8 - Aliens vs. Stalin at Area 51
Season 6 Episode 2 - Aired 4/18/2019
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.
Director: N/A
Writer: N/A
7.5/1022 votesLoading...#9 - A President's Close Encounter
Season 4 Episode 3 - Aired 9/13/2016
Geysers are discovered on a frozen moon, and NASA redirects a probe on a daring mission to detect evidence of life. An unidentified object is spotted approaching a near-earth asteroid. A future president is an eyewitness to a UFO.
Director: N/A
Writer: N/A
7.5/1026 votesLoading...#10 - Did Earth Have Two Moons?
Season 4 Episode 6 - Aired 10/4/2016
A discovery suggests the hellish clouds of Venus may be the origin of life on Earth. A bizarre sighting 2,000 years ago raises the possibility that Earth once had two moons. A scientist helps the FBI crack the 1996 Olympic bombing.
Director: N/A
Writer: N/A
7.5/1022 votesLoading...#11 - Mystery of the Invisible Planet
Season 4 Episode 7 - Aired 10/11/2016
A probe carrying a message to aliens malfunctions as it enters deep space. A NASA mission goes disastrously wrong when an imposter breaches Mission Control. Astronomers may have found an invisible planet around a distant star.
Director: N/A
Writer: N/A
7.5/1012 votesLoading...#12 - The Sun's Evil Twin
Season 5 Episode 3 - Aired 1/6/2018
Two suns are photographed in the Indonesia sky -- a trick of the light or a sighting of our Sun's evil twin? Scientists are baffled by ghostly swirls on the Moon's surface. An astronaut disappears during his return to Earth.
Director: N/A
Writer: N/A
7.5/1013 votesLoading...#13 - Secret Aliens
Season 5 Episode 4 - Aired 1/13/2018
An astronomer records an unusual signal from a distant star. 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.
Director: N/A
Writer: N/A
7.5/1014 votesLoading...#14 - Saturn's Death Star
Season 5 Episode 8 - Aired 2/10/2018
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.
Director: N/A
Writer: N/A
7.3/1023 votesLoading...#15 - The Earth Next Door
Season 4 Episode 4 - Aired 9/20/2016
Astronomers detect a potentially habitable planet tantalizingly close to Earth. A chance discovery at NASA reveals a top secret military space program. The Apollo missions bring back evidence that the moon may be rich in the building blocks for life.
Director: N/A
Writer: N/A
7.2/1019 votesLoading...#16 - Stonehenge on Mars
Season 5 Episode 5 - Aired 1/20/2018
When NASA spots a 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.
Director: N/A
Writer: N/A
7.2/1016 votesLoading...#17 - Did Aliens Nuke Mars?
Season 6 Episode 8 - Aired 5/23/2019
A strange discovery by NASA's Mars Curiosity rover suggests the Red Planet was home to an alien nuclear war 300 million years ago. Experts investigate if an extraterrestrial Armageddon transformed an earth-like world into the wasteland we know today.
Director: N/A
Writer: N/A
7.1/1027 votesLoading...#18 - Pluto Under Pressure
Season 3 Episode 1 - Aired 2/23/2016
Lost tapes reveal that Apollo astronauts heard unexplained transmissions on the far side of the moon, an amateur astronomer spots a strange disturbance in Martian atmosphere & an unidentified object in Earth orbit starts stalking Russian spacecraft.
Director: N/A
Writer: N/A
7.1/1022 votesLoading...#19 - Ghosts on a Comet
Season 3 Episode 4 - Aired 3/15/2016
When a Chinese moon rover breaks down, a NASA scientist points to a mysterious material that seemed to sabotage the Apollo missions, decades earlier. The Rosetta spacecraft finds a comet that appears to be singing.
Director: N/A
Writer: N/A
7.1/1022 votesLoading...#20 - Attack of the Thunderballs
Season 3 Episode 8 - Aired 4/12/2016
Astronauts are evacuated when a mystery object is discovered hurtling towards the ISS, a NASA secret agent goes undercover to recover missing moon rocks & scientists struggle to find answers when they find a huge void at the edge of the solar system.
Director: N/A
Writer: N/A
7.1/1024 votesLoading...#21 - Rise of the Planet Killer
Season 4 Episode 2 - Aired 9/6/2016
A probe captures an image of a strange structure on Mars. Files from the first Apollo mission record an eerie sighting on the dark side of the Moon. A planet-eating star gives scientists a glimpse of Earth's terrible demise.
Director: N/A
Writer: N/A
7.1/1022 votesLoading...#22 - The Black Hole Next Door
Season 6 Episode 3 - Aired 4/25/2019
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.
Director: N/A
Writer: N/A
7.0/1032 votesLoading...#23 - Black Knight Rises
Season 1 Episode 4 - Aired 3/11/2014
A chunk of the sun appears to have vanished. An ominous dark craft beneath the Space Shuttle Endeavour. Hubble spots thousands of unidentified objects traveling faster than light. Are we being watched?
Director: N/A
Writer: N/A
7.0/1024 votesLoading...#24 - Nazis on the Moon
Season 2 Episode 6 - Aired 5/13/2015
A Russian probe discovers the lunar soil was disturbed 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 a Bermuda Triangle of Space?
Director: N/A
Writer: N/A
7.0/1021 votesLoading...#25 - Lethal Weapons
Season 2 Episode 7 - Aired 5/20/2015
How did pictures from the Hubble telescope make the comet of the century look like an alien spacecraft? Has earth already been invaded by alien organisms? What mysterious force is smashing a near-earth asteroid to pieces?
Director: N/A
Writer: N/A
The Best Episodes of NASA's Unexplained Files
Every episode of NASA's Unexplained Files ranked from best to worst. Let's dive into the Best Episodes of NASA's Unexplained Files!
Dive into the mysteries of some of NASA’s most curious missions and explore stories of engineering achievement and human endurance. Each episode offers first hand...
Genres:DocumentaryTalkMystery
Network:Science
Episodes
47
Avg. Rating
7.1
S1
S2
S3
S4
E1
E2
E3
6.1
6.9
7.1
7.0
6.9
6.7
6.8
7.1
6.3
6.7
6.8
7.5
Best Episodes Summary
"JFK UFO Conspiracy" is the best rated episode of "NASA's Unexplained Files". It scored 7.9/10 based on 22 votes. Directed by N/A and written by N/A, it aired on 4/12/2017. This episode scored 0.1 points higher than the second highest rated, "Curse of the Gas Giant".
