Naraht wrote:
> This is more sort of a research question.
>
> Presuming a planet with more or less the same makeup of the solid
> portion, the same age, and same distance from the sun, how large or
> small can the planet be to be habitable by humans? I think the
> primary issue is that if it is larger than a certain size then the
> planet won't lose the Hydrogen/Helium in the atmosphere and become a
> close in Gas Giant and if it is smaller than a certain size, it
> won't keep it's Oxygen long enough (which puts the minimum somewhat
> larger than Mars (or would Mars have kept its oxygen if it had a
> Magnetosphere)).
>
> Any ideas where to look for info on this?
Ask on rec.arts.sf.science.
--
Dan Goodman
"I have always depended on the kindness of stranglers."
Tennessee Williams, A Streetcar Named Expire
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