
NASA's Unexplained Files
After NASA's New Horizons spacecraft flies by Pluto, it encounters a strange alien world.

After NASA's New Horizons spacecraft flies by Pluto, it encounters a strange alien world.

Astronomers investigate the possible danger of a black hole speeding through the Milky Way.

A former Area 51 insider alleges that the Roswell UFO incident was a Soviet conspiracy.

NASA discovers something strange on Saturn's biggest moon; disturbing evidence.

An orbiting object looks like the Death Star; the death of Yuri Gagarin; a satellite vanishes.

Something strange on the lunar surface; phenomenon responsible for mass deaths.

When the Soviet Union unveils its own space shuttle, the CIA hatches a secret revenge plot.

A NASA probe captures an image of a familiar structure on Mars' surface.

An astronomer records an unusual radio signal from beyond the solar system.

A photograph depicts two suns; Ghostly white swirls on the moon's surface baffle NASA scientists.

The Curiosity Rover finds something strange on Mars; detectives turn to NASA for help.

President Kennedy demands that the CIA share its UFO data with NASA; coded alien message on Mars.

Soviet photos of the moon are intercepted by the CIA; a malfunction aboard the ISS.

A probe carrying a message for aliens malfunctions without cause as it enters deep space.

A theory of Earth's abiogenesis may have started in the clouds of Venus.

Cosmonauts are trapped in a capsule in a frozen lake; a NASA scientist investigates the Hindenburg.

Astronomers notice a planet in Earth's vicinity capable of supporting life.

The discovery of geysers on a moon; NASA's mission to detect life.

A mars mission captures an image of a strange structure on the planet.

Evidence of alien technology around a distant star; speculation about Pluto's surface.