Re: Interesting concultural ideas

John Cowan wrote:

>Andreas Johansson wrote:
>>Not to mention the amount
>>of building material ... at a quick estimate more than the mass of of the
>>Solar System minus the Sun (assuming a laughable average thickness of 1
>>km).
>
>You want to dismantle the entire rest of the stellar system anyhow,
>so that no space junk remains that might damage the ring.
That last would seem a very minor detail (except how the heck do you clean
an Oort cloud?). Besides, at least on our solar system, the planets are
mostly made of hydrogen and helium, which are hardly useable as construction
material, unless you transmute the stuff into carbon or something.

                                                  Andreas

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