Life On Mars

I agree that all life doesn't necessarily need that same conditions as us to live. but if there was life on Mars, in the sense of a working ecosystem, we would have found it by now.

 

That's probably a joker who took a picture of this in a desert. Later he published the picture online and spread the rumor it's an alien on Mars.
However... you never know. That could in fact be an alien.
I remember watching television about the moon landing and when Neil Armstrong wandered on the moon he said: 'They're watching us...'