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There must have been a large volume of water on the surface of mars at one time, in order for the erosion that is evident to occur. I wonder what happened to it? Is there enough volume of ice in the polar caps to contain this water? And why do they appear to grow and shrink so drastically during the planetary seasons? (I am not suggesting anything tinfoil-hattish, just some things I have wondered about.)

And while I do believe that man will someday make it too the red planet, I don't think that it will be within my lifetime, or even this century. Remember in Apollo 13, when Tom Hanks said to the touring congressmen why space exploration should be justified: "What if Columbus had gone to America, come back and never returned?" That is exactly what we did. Sorry for the rant, but this fact just disappointed me.