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 taken ...

A UFO hunter claims to have proof a huge alien base exists on Mars that NASA doesn’t want you to know about. Extraterritorial enthusiast Scott C. Waring discussed the “mind-blowing” discovery of the ...

From mudstones on Mars to strange gases in exoplanet atmospheres, tentative evidence for extraterrestrial life is starting to ...

The surface of Mars looks like an empty red wasteland. But if you look a bit closer, the remnants of an ancient alien civilization begin to take shape. At least, that's the conclusion of George J.

It has been described as one of the 'most bizarre' objects ever discovered on the Martian surface. So could extraterrestrials be to blame for this 'bone-like' rock with peculiar pointy protrusions?

Alien hunters say that pictures from the Curiosity rover on Mars show what they claim to be a crucifix erected on the rocky surface. The sighting of the cross is also near what conspiracy theorists ...

In a new study, scientists say they uncovered strange debris on Mars that's unlike anything they've seen on the Red Planet before. What's more, the team said they cannot say with absolute certainty ...

NASA has spotted mysterious 'spiderwebs' on a never-before-explored region near the equator of Mars. The agency's Curiosity rover has been dispatched to probe these bizarre structures — which cover a ...

NASA has released a new image captured from its Curiosity rover on Mars that appears to show a strange doorway on the Red Planet. The rover captured the grainy image from the Mast Camera (Mastcam) on ...

NASA’s latest images from Mars show a rock that looks less like a random boulder and more like something deliberately carved, a sculpted shard standing alone on the dusty plain. The discovery has ...

Mars was once home not only to an ocean but "vacation-style" beaches with sun, sand and softly lapping waves, new findings suggest. Researchers now believe that the planet was covered in a huge ocean ...