A good chance to return to the thread's original topic: ESA published a video, made from hig resolution photos taken by Mars Express during the last 10 years that shows a flight through Mars' former river valley Kasei Valles.
http://www.esa.int/spaceinvideos/Videos/2014/01/The_floodwaters_of_Mars
I'd love to go there one day and dig a bit in the sand, hunting for traces of life.
http://www.esa.int/spaceinvideos/Videos/2014/01/The_floodwaters_of_Mars
I'd love to go there one day and dig a bit in the sand, hunting for traces of life.