An image of Mars taken by NASA's rover has sparked theories that aliens may be hiding on the Red Planet.

A NASA Curiosity rover image has sparked claims of an 'alien missile' on Mars, though NASA attributes such formations to natural geological processes.

Mars has become a magnet for claims about strange structures, mysterious objects and possible evidence of alien civilisations. The planet's surface has countless rocks, cliffs, cavities and fractures; ...

NASA’s Curiosity rover has once again found itself at the center of an extraordinary alien theory after a resurfaced image from Mars sparked fresh debate online. UFO researcher Scott C. Waring claimed ...