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Humanity has worshipped the Sun since the beginning of time, and yet even with modern technology, so little is known about it; analyzing if unlocking the mysteries of the Sun can be the difference between life and death for human civilization.

The UnXplained: Mysteries of the Universe

Secrets of the Sun

Earth's moon is only one of hundreds in the solar system, each of them a mysterious and often bizarre world; analyzing if alien moons offer a key to explore outer space and even finding a new home for humanity.

Alien Moons

Humans want to go into uncharted territories to make discoveries; as the next era of space exploration begins it must be analyzed what humans will find when reaching other planets, as well as the dangers faced when trying to conquer new frontiers.

Search for the Next Frontier

From massive asteroids and deadly bursts of radiation to microscopic alien viruses, each one of these cosmic dangers may end human civilization as we know it. Can we prepare for the inevitable calamity that may be coming our way? Or are we doomed to oblivion?

Dangers From Space

For centuries, we've been fascinated by our nearest planetary neighbor, Venus, and its shimmering appearance in our night sky. But this glowing yellow orb that's about the same size as our world is covered in massive volcanoes, poisonous clouds of acid rain, and a surface temperature hot enough to melt lead. Is Venus our evil twin--or a warning about what Earth will become in the future?

Venus: Earth's Evil Twin

The blue marble called Earth remains in large part a mystery to the 8 billion people who live on it; analyzing how Earth came to exist, and the secrets of its survival; discussing how long humans will be able to call it "home."

Mysterious Earth

As we make plans to travel beyond the Moon to new worlds, how are we preparing to become human extraterrestrials? Just how will we survive this trip into the unknown? Will we be able to thrive once we get to our next galactic destination? And what will we do if we make contact with intelligent life?

Alien Earthlings

Unidentified objects, witnessed by military pilots; extraterrestrial probes, flying through the solar system; a potential alien home world that may be hidden in the darkness of space.

Are We Alone?

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William Shatner explores the earth and beyond in search of the universe's most fascinating, strange and inexplicable mysteries.

S1 E8 | Secrets of the Sun