jwilson at io.com
Sun Dec 16 11:14:45 PST 2007
Pedro Pereira wrote:
> I dont know either, but it seems to me that that limit would be met
> before geting so close that the atmospheres would touch (as is told in
> the Book of the Short Sun).
Not necessarily. Being fluid, the atmosphere is subject to positive
feedback in that the tidal forces cause it to rise in a bulge, getting
closer to the primary and thus being subject to stronger tides that make
it bulge still more, etc.
The point is moot WRT to the moon; its "atmosphere" is a remnant,
transitory puff of gas that was replaced twice over by exhaust from the
Jeff Wilson - jwilson at io.com
< http://www.io.com/~jwilson >
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