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 images ...

When sonar first picked up a massive, stair‑like object on the floor of the Baltic Sea, the image looked less like geology and more like a movie prop. The structure’s circular outline, sharp edges and ...

From UFOs buried in the Sahara Desert to mysterious doorways in Antarctica, Google Maps users have made dozens of wild discoveries over the years. But the latest sighting is one of the strangest yet.