Throughout the years, there have been many strange objects spotted that could hint at life having existed or still existing on Mars but nothing has ever looked convincing enough and mostly appeared to be natural rock formations.
However, an image captured by Nasa's Curiosity rover appears to show a complete set of humanoid bones lying amongst the rock.
Whatever it may be, it does look allot like a skeleton. Could humans have lived on Mars before, or perhaps it's the remains of an ancient martian?