It's true, we have no way of comparing the photos, so we have only two options, we accept them or we do not accept them.
As far as I have seen, I think I can trust NASA images published to the scientific world but not the press-release and publicity photos, so I will
keep on trusting the scientific sources.
If all of these conditions are needed to have same colors on mars and earth, why the colors are the same when we can see the earth from outside, like
from the ISS ?
I have not seen that website before. Interesting... although I doubt any obvious evidence of a prior (advanced) civilization on Mars. Any manmade
structures here on Earth would crumble and decay after a few tens of thousands of years. Still, I think that Skipper should be a conspiracy master on
ATS!