Photos beamed back from the martian surface by NASA show a barren landscape devoid of any life.
But one image reveals something totally unexpected – a dark black orb hanging in the air.
The photo is the latest in a series of pictures cited as evidence of alien life by UFO fanatics.
In one recent discovery, a man from Bristol spotted what looked like a sphinx on Mars in a NASA image.
Another photo of a woman bathing in her bikini seemed to show a flying saucer soaring in the skies behind her.
Even a picture of a government convoy made headlines, after it was said to show a UFO being transported under canvas.
Top secret CIA files about UFOs reveal, however, that the US government has investigated the phenomenon.