Hey list, If mars is red from dust covering the planet, why are the polar caps not red also? Wouldn't they be like giant cherry snowcones?
As it happens, the southern (thicker) polar cap on Mars IS slightly red. Presumably the tint comes from oxidized dust blown by surface winds and embedded into the dry ice which comprises most of the cap material. The northern cap is much thinner and evaporates far more than the southern cap on a seasonal basis, and so does not get a chance to build up embedded layers of red dust.
-- Philip R. "Pib" Burns [EMAIL PROTECTED] http://www.pibburns.com/
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