Re: Mars in true color
Thanks Bob - The part that gets me about the Pathfinder images is that not only are some of the rocks gray, and always to the windward side, but also if you look at the soil, then wherever the top layer of iron dust has been blown away, a gray subsoil is revealed underneath.
Since that is the case, I'll disagree with Barry e al on this, and point out the simple fact that underneath the iron dust layer Mars is gray. The perception of "blue-green" is most likely an artifact of their desire to see life on Mars, similar to the way others "see" a landscape like the desert southwest of the United States.
EP