Life on Mars? NASA finds image of naked woman on Mars

Perched on a rock, she could be waiting for a bus.

But if so, she could be in for an awfully long wait.

This photo of what looks remarkably like a female figure with her arm outstretched, was taken on Mars.

Perhaps unsurprisingly, it has set the Internet abuzz with claims that there really is life on the red planet.

Others may well feel that it is simply an optical illusion caused by a landscape.

The image was among many sent back to Earth by Spirit, Nasa's Mars explorer vehicle which landed there four years ago.

Initial inspections revealed nothing unusual, but closer examination by amateur astronomers has thrown up this intriguing picture.