Earth’s Two Moons & Strange Planetary Mysteries | NASA’s Unexplained Files | Science Channel

Space-Age Secrets Revealed | NASA’s Unexplained Files | Science Channel

Neil Armstrong's Secret: Astronaut's Mysterious Post-Moon Landing Life | NASA’s Unexplained Files

Are We Ready to Colonize Earth's Twin? Scientists Weigh In | NASA's Unexplained Files

Did Romans Witness 2 Moons In the Sky? | NASA's Unexplained Files | Science Channel

The Untold Comet Connection to the Great Flood | NASA's Unexplained Files | Science Channel

The Electrifying Mystery of Titan's Sand Dunes | NASA's Unexplained Files | Science Channel

Are We Ready? The Mars Colonization Plan Revealed | NASA's Unexplained Files | Science Channel

Extraterrestrial Mysteries of Season 7 | NASA's Unexplained Files | Science Channel

Is this black hole endangering our solar system? | NASA's Unexplained Files | Science Channel

The Curious Case of the Object that Halted NASA's Signal | NASA's Unexplained Files

NASA Reveals Water Found on the Moon's Surface | NASA’s Unexplained Files | Science Channel

Uncovering the Electrified Mystery of Saturn's Moon | NASA's Unexplained Files | Science Channel

What Would an Alien Encounter With Earth Be Like | NASA’s Unexplained Files

Uncovering the SHOCKING TRUTH Behind an Engineer's Space Shuttle Theft | NASA's Unexplained Files

Did Alien Creatures Turn Russian Troops Into Stone?! | NASA's Unexplained Files | Science Channel

Did the Dogon Tribe Predict What Stars Are Made Of?! | NASA’s Unexplained Files | Science Channel

Neil Armstong Contacts Aliens on THE MOON?! | NASA’s Unexplained Files | Science Channel

Do alien blobs get their energy from the stars?! | NASA's Unexplained Files | Science Channel

The FIRST Chinese Astronaut?! | NASA's Unexplained Files | Science Channel

Spacecraft crash landing over Kazakhstan! | NASA's Unexplained Files | Science Channel

Scientists experiment with artificial gravity! | NASA’s Unexplained Files | Science Channel

Unidentified DNA found in an octopus! Could it be an alien genome? | NASA's Unexplained Files

Experts Investigate Unusual Aircraft & Discover Possible Alien Activity | NASA's Unexplained Files

Experts see strange rays of light ripping through space | NASA's Unexplained Files | Science Channel

Fireball in Russian Airspace & the Possibility of The Death Star | Nasa’s Unexplained Files

What is a space squid? | NASA's Unexplained Files

Saturn and Earth's Moon Display Strange Phenomenons | NASA's Unexplained Files | Science Channel

Experts Fear Foreign Attack on Scientific Satellite | NASA's Unexplained Files

Saturn's Death Star | NASA's Unexplained Files

"That's Way Too Slow to be a Missile" | NASA's Unexplained Files

How A Lake Caused A Scene "Out of a Horror Movie" | NASA's Unexplained Files

How The CIA Leaked Fake Secrets to The Soviets | NASA's Unexplained Files

Alarm Signals Dangerously High Levels of Radiation on the ISS | NASA's Unexplained Files

The Large Hadron Collider is a Marvel of Engineering | NASA's Unexplained Files

Astronaut's Sudden Flu-Like Symptoms Cause Grave Emergency | NASA's Unexplained Files

Is Octopus DNA Actually Alien? | NASA's Unexplained Files

The Hampton Incident: An Unexplained U.F.O. Sighting in 1965 | NASA's Unexplained Files

The Dark, Evil Twin of the Sun! | NASA's Unexplained Files

Disaster Strikes a Lone Soviet Cosmonaut! | NASA's Unexplained Files

How NASA Helped Convict a Murderer | NASA's Unexplained Files

A Dangerous Judgement Call Was Necessary To Land on the Moon | NASA's Unexplained Files

Mars is Covered In Vast Sand Dunes | NASA's Unexplained Files

JFK's Memo to NASA... Just Ten Days Before Assassination | NASA's Unexplained Files

Are Chemtrails a Sinister Government Plot? | NASA's Unexplained Files

Salt Water on Mars? The Implications Are Huge | NASA's Unexplained Files

Officer Spots a U.F.O. During a High-Speed Chase! | NASA's Unexplained Files

Unexplained Malfunction Forces a Life or Death Rescue Mission | NASA's Unexplained Files

The First Aviation Disaster Captured on Film: Secrets of The Hindenburg | NASA's Unexplained Files

What Was The Wow! Signal? | NASA's Unexplained Files

President Jimmy Carter Spots a U.F.O. | NASA's Unexplained Files

"There's a Strange Light" NASA Astronauts Spot Campfires on the Moon | NASA's Unexplained Files

Was NASA Spying on The Soviet Union? | NASA's Unexplained Files

Building the Perfect Astronaut | NASA's Unexplained Files

Neil Armstrong’s Search for an Ancient Library in the Amazon | NASA's Unexplained Files

Did Aliens Nuke Mars? | NASA's Unexplained Files

An Exoplanet Home to Metal Aliens? | NASA's Unexplained Files

Who or What Is Knocking On His Spacecraft? | NASA's Unexplained Files

Why Did the FBI Raid This Solar Observatory? | NASA's Unexplained Files

What if a Black Hole Entered Our Solar System? | NASA's Unexplained Files

Is an Alien Spacecraft Hiding in the Kuiper Belt? | NASA's Unexplained Files

Saturn's Perfect Hexagon | NASA's Unexplained Files (Full Episode)

Mysterious Signs of "Intelligent Lightning" | NASA's Unexplained Files (Full Episode)

What Are Mars "Blueberries"? | NASA's Unexplained Files (Full Episode)

A Piece of the Sun Missing? | NASA's Unexplained Files (Full Episode)

What's Behind this Bizarre Looking Comet? | NASA's Unexplained Files (Full Episode)

Mysterious Lights Interrupt Astronaut's Spacewalk | NASA's Unexplained Files (Full Episode)

The Strangest Encounters in Space | NASA's Unexplained Files (Full Episode)

NASA Astronauts Discuss Extraterrestrial Life | NASA's Unexplained Files

An Apollo Astronaut Explains What It Was Like To Work On The Moon

What Is in a Meteor Crater?

Is There Life on Enceladus?

The Discovery of Neutron Stars | NASA's Unexplained Files

There’s a Hole in One of Saturn’s Rings

What Turned the Arctic Snow Red?

How Did The Sun Jam Military Radar Systems?

See How Two Cosmonauts Narrowly Escaped a Massive Explosion

What Strange Power Source Makes Jupiter So Hot?

Could This Moon Crater Hide The Remains Of A Failed NASA Experiment?

These Astronauts Narrowly Avoided A Harrowing Space Escape

Rebooting the International Space Station

Did an 18th-Century Astronomer Watch Two Stars Collide?

Did Someone Hack Voyager 2?

Recovering a $10 Million Satellite... by Hand

This NASA Scientist Helped Crack the 1996 Olympic Bombing

Fireworks or Outer-Space Lightning?

What Can Explain This New Mexico UFO Sighting?

Cracking the Curse of the Full Moon

This Astronaut Saved His Crew Mates

Did the Government Want to Send Spies into Space?

Scientists Spot a Super Destructive Dying Star

Jimmy Carter May Have Seen A UFO

Exoplanet Wolf 1061c Doesn't Spin

Enceladus is an Active World

Why Did Apollo Astronauts Wear Boxes Over Their Heads?

What Are These "Space Snails" on Pluto?

Apollo 17 Astronauts Spot Light Flashes on the Moon

Soyuz Capsule Out of Control During Re-entry

Mountains on Pluto

What Is This Thick Milky Rain?

Could Humans Ever Colonize the Clouds of Venus?

Why Do Probes Disappear Near Mars?

Can the ISS be Hacked?

What Is the 'Venus Scorpion'?

Painting an Asteroid to Save the Planet

Sudden Shouting on Approach to ISS

Could Microbes Survive on the Lunar Surface?

Could There Be Life Under Ganymede's Icy Crust?

Microorganisms Discovered on the Mir Space Station

Wandering Rocks of Death Valley

Could We Move to Earth 2.0?

Mercury's Strange 'Spider' Formation

NASA Loses Contact with New Horizons on Pluto Approach

Why Does Neptune's Moon, Triton, Orbit Backwards?

How Can This Super Hot Planet Have Ice?

Why Does the Moon Sound Hollow?

Outer Space Music Pt 1 of 2 | NASA's Unexplained Files

Outer Space Music Pt 2 of 2 | NASA's Unexplained Files

Is There Life On Kepler-186f? | NASA's Unexplained Files

Was There A Nazi Moon Landing?

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