How large a volume of material do we need if we want to build a 3cm thick Dyson sphere at the mean distance between E and V from the sun?
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Gases are easy, but for hard materials, getting to the core of the giants to get minerals means absurdly high pressures
Maybe easier to just make them from fusion if we have a lot of gas?
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That would be one option. Jupiter has over 300 Earth massees. Given enough energy, and a better understanding of fusion
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One could get to iron only. Beyond that, you have to add net mass-energy to the mix. https://en.m.wikipedia.org/wiki/Iron_peak
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Yes, but if we have 'near infinite' energy (massive amounts of fusion), this may not be that big of a problem.
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But then again, normally it does require a supernova... :p
End of conversation
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