What on Mars is that?

Life on Mars? Well, bizarre images have emerged showing a mystery female figure walking down a hill on the arid planet.

The photo of what looks like a naked woman with her arm outstretched was among several taken on the red planet and sent back to earth by Nasa's Mars explorer "Spirit," Britain's Daily Mail reported on Wednesday, citing an unnamed website.

Though no official confirmation has come from Nasa on whether the figure is an alien or an optical illusion caused by the landscape on Mars, it has set the Internet abuzz about the possibility of life on Mars.

As one enthusiast put it on the website: "These pictures are amazing. I couldn't believe my eyes when I saw what appears to be a naked alien running around on Mars."

The news of the mystery woman on Mars came just days after a team of French scientists claimed to have discovered proof that the red planet possesses...