Back in 2011, Swedish explorers Peter Lindberg and Denis Asberg were combing the Baltic Sea for treasure when their sonar ...

The Antarctic 'alien' was spotted by a social media user looking at satellite imagery of the area, with some speculating it ...

USA: Are these grainy photographs proof of mysterious, hidden alien structures on Mars? Probably not, but it has not stopped self-proclaimed alien and UFO 'experts' from claiming a series of ...

A mysterious square structure has been discovered on Mars, sparking interest and numerous speculations among space ...

A perfectly square-shaped structure has been discovered on Mars, which is 3 kilometers wide. The discovery has generated ...

An 'square structure' recorded by the NASA's Mars Orbiter Camera in 2001 is currently going viral online - as many wonder what it could be.

One particularly wild, now largely debunked theory is that an alien structure of some type is responsible for blocking the star’s light. It would have to be absolutely massive in size ...