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by sand500 858 days ago
Does it have to be a sheet of material? If all we want to do is shade the earth, we could launch a few million KGs of glitter into low earth orbit or to the Sun-Earth L1.
1 comments
ajuc 858 days ago
They would attract each other and clump into a loose ball.
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sand500 852 days ago
Probably only over thousands or millions of years?
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