A NASA Curiosity rover image has sparked debate after a UFO hunter claimed it shows an alien missile, though NASA attributes it to natural rock formations.

NASA chief Jared Isaacman has said the US space agency holds images of objects it cannot explain, but he stopped short of calling them proof of alien life when he spoke on the Jack Gordon Podcast on ...

A UFO researcher claims NASA captured an 'unexploded alien missile' on Mars from an ancient war, but scientists have offered a different explanation ...