How Does a Fridge Keep Cool? - NASA's Unexplained Files | Science

NASA's Unexplained Files

NASA's Unexplained Files

NASA's Unexplained Files

NASA's Unexplained Files

More from this Show

Scientists think the Sun may have devoured it.

NASA's Unexplained Files

There May Have Been a Planet Between Mercury and the Sun

i

We’re so envious.

NASA's Unexplained Files

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

i

Is a moon to blame?

NASA's Unexplained Files

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

i

Could it be a wandering planet?

NASA's Unexplained Files

A Mystery Object in Moving Through the Solar System

i

It’s millions of miles away from the Sun, but somehow reaches temperatures of 1,300 degrees Fahrenheit.

NASA's Unexplained Files

How is Jupiter So Hot?

i

The mystery of the impossble star took over 300 years to solve!

NASA's Unexplained Files

Cassini Witnessed Two Stars Collide

i

As Voyager 2 prepared to cross over into deep space, the probe began outputting a strange language that scientists could not read. Further analysis suggests some sort of hack, but was it by someone on Earth?

NASA's Unexplained Files

Did Someone Hack Voyager 2?

i

In 1964 Sergeant Lonnie Zamora witnessed a shiny unidentified object and strange flames. Although there have been many theories as to what Zamora saw, this mystery remains unsolved.

NASA's Unexplained Files

Socorro UFO Sighting

i

When NASA realized photos that appeared to show a bizarre force over Earth, many theories arose. Could it be lasers? Fireworks? The answer is actually MUCH cooler.

NASA's Unexplained Files

Astronauts Spotted a Strange Light Over Earth

i

Forty years ago, the Apollo 11 team deposited reflectors on the moon. Researchers are perplexed when the reflectors continuously fail to work during full moons.

NASA's Unexplained Files

Full Moon Curse

i

In 2004 a NASA employee stumbled upon an unknown, locked room. Inside they find strange space suits that do not match with any known space missions. Are they evidence of a secret space mission?

NASA's Unexplained Files

The Government Wanted to Send Spies into Space

i

Just like items at a store have a barcode, stars have a barcode in their light that can allow us to discover unseen objects. One of these objects turns out to be a potentially habitable exoplanet named Wolf 1061c.

NASA's Unexplained Files

Exoplanet Wolf 1061c Doesn’t Spin

i

In 1969 Georgia governor and future POTUS, Jimmy Carter, claimed he saw a UFO. When he became president, he instructed the CIA to release documents regarding UFOs. The CIA denied this request.

NASA's Unexplained Files

Jimmy Carter May Have Seen A UFO

i

Saturn’s moon, Enceladus, has icy water jets. The geyser plumes on Enceladus are 8,000 times larger than those on Earth.

NASA's Unexplained Files

Enceladus is an Active World

i

Towards the tail end of the Apollo-Soyuz Test Project, astronauts nearly suffocated in their own spacecraft. The mission would have ended in absolute disaster without the quick and calm thinking of astronaut Tom Stafford.

NASA's Unexplained Files

How an Astronaut Saved His Crew Mates

i

While using the Kepler Telescope to search for dying stars, scientists found a star that seems to defy our understanding of space physics. It appears to be turned inside out, but it’s destroying the planetary system around it.

NASA's Unexplained Files

Scientists Spot a Super Destructive Dying Star

i

You May Also Like

Scientists have reason to believe that there could be life on Kepler-186f. Could mankind live on this planet?

NASA's Unexplained Files

Is There Life On Kepler-186f?

i

Did someone test a nuclear warhead somewhere in the ocean? And if so, who?

NASA's Unexplained Files

Was There Nuclear Testing In The Ocean?

i

More than 200 precision built parts, fine nickel wire, and a handcrafted wood body give this electric guitar its trademark sound.

NASA's Unexplained Files

Breaking Down a Guitar

i

Scientists still have no explaination for the strange spiral lights that once appeared in Norway's sky.

NASA's Unexplained Files

Signs in the Sky

i

NASA's astronauts face a lot of potential dangers in space, but one of the most dangerous ones just might be their fellow astronauts or even themselves. Is radiation causing mutations and space madness in our astronauts?

NASA's Unexplained Files

Are Our Astronauts Mutating?

i

When Apollo astronauts conducted an experiment to see what the moon’s core was made of, the results shocked everyone.

NASA's Unexplained Files

Why Does the Moon Sound Hollow?

i

If mankind is going to remain, we may have to inhabit space.

NASA's Unexplained Files

Will We Inhabit Space?

i

Mercury is one of the hottest planets in our galaxy, but that doesn’t stop it from having water ice. NASA’s MESSENGER probe discovered the water ice after an eight year journey through our solar system.

NASA's Unexplained Files

How Can This Super Hot Planet Have Ice?

i

Europa has the key elements for life. Even if life isn’t currently there, could the moon be habitable in the future?

NASA's Unexplained Files

Is Jupiter’s Moon Habitable?

i

According to NASA scientists, Enceladus may be the best place to look for alien life. It has a warm core, an ocean, and organic compounds.

NASA's Unexplained Files

Is There Life on Enceladus?

i

As Apollo astronauts were preparing to land on the moon, they spotted a series of light flashes seemingly coming from the moon’s surface. The case is still unsolved.

NASA's Unexplained Files

Light Flashes on the Moon

i

NASA’s New Horizons captures a strange sight on the surface of Pluto. Snail-like figures and apparent trails behind them. What are they actually?

NASA's Unexplained Files

Space Snails on Pluto

i

If there are potentially thousands of planets that can sustain life, where are all the aliens?

NASA's Unexplained Files

NASA Astronauts Discuss Extraterrestrial Life

i

The cork on the champagne bottle absorbs all of the impact and thrusts the drink backwards.

NASA's Unexplained Files

Champagne Strikes Back

i

Astronauts from every lunar mission after Apollo 11 report seeing strange flickering lights while in space. Could the cause be cosmic rays? The astronauts had to wear a box over their heads to find out.

NASA's Unexplained Files

Apollo Astronauts Wore Boxes Over Their Heads

i

Towards the tail end of the Apollo-Soyuz Test Project, astronauts nearly suffocated in their own spacecraft. The mission would have ended in absolute disaster without the quick and calm thinking of astronaut Tom Stafford.

NASA's Unexplained Files

How an Astronaut Saved His Crew Mates

i

Watch More Full Episodes from These Networks

join the list

Sign up for the SCIENCE newsletter

I agree to receive information from Discovery Communications in accordance with the following Privacy Policy

More Ways to Watch SCI

Our Sites

Discovery Channel
HGTV
Food Network
TLC
Investigation Discovery
Animal Planet
Travel Channel
DIY Network
Cooking Channel
MotorTrend
Destination America
American Heroes Channel
Discovery Life

Corporate

Discovery Communications, LLC
Viewer Relations
Advertising
Careers at Discovery

Visitor Agreement|
Privacy|
California Do Not Sell My Info|
AdChoices|
About|
FAQ|
Contact Us|
TV Ratings|
Online Closed Captioning

Copyright © 2020 Discovery Communications, LLC. The World's #1 Nonfiction Media Company.