Declassified files have revealed shocking details about an alleged UFO encounter over a remote military base that was covered up for more than three decades.

If life exists elsewhere in the universe, researchers at the University of Washington are finding the clues on Earth to help ...

Satellite images allegedly revealed a 1.5-mile object resting on the lunar surface. Supporters of the theory claim it wasn’t rock - it was alien.

Aliens exist - they just haven't visited Earth, NASA veteran Dr Gentry Lee has claimed.

Obama even admitted that the first question he wanted answered after becoming president was "Where are the aliens?" ...

The evil lair is a classic trope used by many criminal masterminds who want to work on their plans for world domination.

From waterfalls that seem to disappear into nowhere to blood-colored water, these places are shrouded in mystery-even if science can explain most of them.

A nanomechanical sensor once limited to the lab can now detect ultrafine airborne particles, closing a key gap in pollution monitoring and climate science.

Even the most devoted cultist is, in some sense, having fun Some conspiracy theories are more interesting than others. The most boring kind is also the most popular. Somewhere, there’s a sinister ...

Various documentaries dominate the schedules this week, with Tony Blair, Gordon Ramsay, Sarah Ferguson’s dresser Jane Andrews, and America’s Next Top Model all being placed under the microscope.

Antarctica has lost nearly 5,000 square miles of "grounded ice" in 30 years, as warming ocean waters drive retreat in ...

An ungainly barrel of a shark cruising languidly over a barren seabed far too deep for the sun’s rays to illuminate was an ...