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"Also, concentrated uranium deposits are probably less common [on Mars] than on Earth because they depend on sedimentary and hydrothermal processes which are mu
by wtracy 13y ago
"Also, concentrated uranium deposits are probably less common [on Mars] than on Earth because they depend on sedimentary and hydrothermal processes which are much more prevalent on Earth."
There is some evidence otherwise: http://en.wikipedia.org/wiki/Natural_nuclear_fission_reactor#Mars http://en.wikipedia.org/wiki/Natural_nuclear_fission_reactor...
To me, the obvious reason to look outwards rather than inwards in the solar system is that it is easier to heat an environment that is too cold than to cool an environment that is too hot. The possibility of underground areas on Mercury being the just-right temperature is intriguing, though.
- jaggederest 13y agoThe thing is, though, to cool something in an airless environment you just put up some sunshades and suddenly everything is a ridiculous -100 C or so. No convective or conductive heat transfer to speak of, so it's entirely radiative, which means a couple layers of tinfoil reduce it to functionally zero. Assuming your tinfoil doesn't melt, of course.