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From the smallest cell to the solar system, Science is an odyssey of scientific facts, investigations and breakthroughs.

Science

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 a wasteland.

NASA's Unexplained Files

Did Aliens Nuke Mars?

Experts investigate if a nearby exoplanet could be the home to an alien civilization of strange, metallic monsters, after a new discovery confirms that life can thrive on such a strange world.

Planet of the Metal Aliens

From the smallest cell to the solar system, Science HD is an odyssey of scientific facts, investigations and breakthroughs.

Science HD

When NASA begins a strange experiment to communicate with dolphins, experts investigate if it's a prelude to making alien contact; some fear that such a discovery could have apocalyptic consequences.

Secrets of the Alien Signals

After Neil Armstrong's moonwalk, he leads an expedition into the Amazon to find a legendary library that holds all knowledge of an advanced alien civilization; experts ask if a close encounter on the moon's surface inspired Armstrong's quest.

Aliens in the Amazon

After NASA's New Horizons spacecraft flies by Pluto, it encounters a strange alien world that shuts down the probe's computers; experts investigate if the mysterious object is an alien spacecraft hiding at the edge of the solar system.

Pluto's Evil Twin

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.

The Black Hole Next Door

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.

Aliens vs. Stalin at Area 51

When NASA discovers something strange on Saturn's biggest moon, experts investigate if aliens feeding on the world's electric atmosphere could be the culprit; the disturbing evidence points to an apocalypse if these monsters ever make it to Earth.

Saturn's Moon Monsters

Some things are better left to science for an explanation.

S6 E7 | Planet of the Metal Aliens

E8 | Did Aliens Nuke Mars?

E7 | Planet of the Metal Aliens

E6 | Secrets of the Alien Signals

E5 | Aliens in the Amazon

E4 | Pluto's Evil Twin

E3 | The Black Hole Next Door

E2 | Aliens vs. Stalin at Area 51

E1 | Saturn's Moon Monsters