Re: Planets and Moons

> What's always puzzled me is what you would do with the Earth's biosphere
> while you were constructing this outsized beach-ball, and whether it
> wouldn't be too fragile to survive more than a couple of hundred years,
> which would seem a bit of a waste, having gone to all that effort.
Sorry about the misspelling.  There are more fundamental problems with
a Dyson Sphere.  Inside a spherical shell, there is no tendency to
gravitate toward the surface, so the atmosphere would not 'cling' to
the wall.  From every point in the sphere, the ground beneath causes
exactly the same ammount of attraction as the sum attraction of all
the mass above.  There's also the problem of 'stellar wind'.  Earth's
magnetic field shirks this particle radiation.  In a Dyson Sphere, it
has no path of escape.

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