Some believe that the above magnified image from Nasa's spacecraft Spirit is a man or creature on the planet Mars.
An image of a mysterious shape on the surface of Mars, taken by Nasa spacecraft Spirit, has reignited the debate about life on the Red Planet.
A magnified version of the picture, posted on the internet, appears to some to show what resembles a human form among a crop of rocks.
While some bloggers have dismissed the image as a trick of light, others say it is evidence of an alien presence.
The image is from a Nasa posting of the Spirit's landing site in 2004.
Some people have been comparing the "man on mars" to a Little Mermaid statue which overlooks the Copenhagen harbor. Why would a mermaid hang out on Mars? It's fun to speculate but it is most likely just a rock formation - a natural occurence - just like the much discussed Face on Mars turned out to be.
