On 13-11-2012 9:48, Bill Pragnell wrote:
> However, I do not believe the present artifact is supposed to encircle a star,
> or spin like a ringworld (at least not enough to generate significant
> centrifugal forces). I like the idea that it is planet-scaled, generating
> gravity by virtue of its own mass. It is difficult to see how it could form
> naturally of course...

My idea too. A torus with Earth's diameter at least as cross-section to 
generate the necessary gravity at the surface; the same composition, 
with a molten metallic core (inner torus). The whole structure orbiting 
a star... which would probably tear it apart, or free in the 
interstellar medium, with a need for a light and warmth source...

Interesting musing... ;-)

Thomas

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