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Post by Chicago Astronomer Joe on Dec 21, 2005 15:33:50 GMT -6
Thanks for the link.
I disagree with the articles direction.
It assumes that it's just the outcrop of sendimentary rock that reflects of large bodies of water in the Martian past. And in that, perhaps it is correct to assume not. The rocks could indeed show volcanic or impact effects.
But as early as the Mariner probes of the 60's, high overhead shots clearly showed evidence of once flowing water in dry river beds, tear drop islands and once wet shores. Even evidence of great torrents that scrubbed the low lands.
No, I still believe that water exists underground on the planet, and seeps out from time to time, ( as the raw THEMES images show).