Aliens

The astronaut recalled some pretty strange sightings from his space missions

He claims they experimented on him while he was sleeping

The man has held onto a piece of the supposed UFO wreckage for nearly 80 years

Scientist Stephen Hawking had some pretty scary concerns about how he thought the world would end

Mummies are incredibly valuable commodities on the black market

The bizarre three-fingered mummies found in Peru could be aliens from another planet

The eerie lights appear to be hanging in space.

Would Area 51's secrets finally be uncovered?

Could there be little green men walking amongst us?

This could be the answer to human life on Mars.

Some fear they'll find alien life in the virtual program.

If there are other civilisations out there, it doesn't mean they have any desire to talk back to us.

Nasa have issued a plea in the hopes of discovering alien life.

The Reddit user claimed to have found a '1/4 mile crater' while browsing Google Earth.

The highly classified base has baffled people for decades.

It might be an alien invasion...

His X platform would be the first to know.

Could there be aliens lurking somewhere out there?

A top scientist explains his theory

This underwater rock formation has been baffling scientists for years.

This stretches the idea of what's possible.

One of the universe's bigger mysteries seemingly explained.

It's certainly a hard one to explain.

Stephen Hawking was reportedly a fan of the 'dark forest' alien theory.

The Pentagon has studied sightings of unidentified phenomena going far back and a new report addresses some theories.