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by guelo 3283 days ago
We just need a material as light as a balloon but rigid enough to hold its shape and maintain a huge vacuum at 1 atmosphere outside pressure.
1 comments
scarmig 3283 days ago
Perhaps graphene aerogel, with a nonpermeable graphene casing?

I'm not sure of what its behavior would be with all its air sucked out, though.

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honestoHeminway 3280 days ago
like a hair full of nothing..
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