While the possibility for ET seems to grow with new extremophile discoveries on Earth, the truth is there's no evidence that life ever evolved on Mars or if it even exists today.

But if there were past or present life on the red planet - a big if - scientists speculate it would likely be similar to some extreme life on Earth - microscopic and hardy, capable of withstanding colder-than-Antarctica temperatures and low pressures.

The man on the picture is not on Mars.
But it looks pretty much the same....