Charting the coming ice age.
How did they manage that, then?Every time I see the latest artist's impression of that thing, I think they've got absolutely no imagination. Why are they supporting those panels with dirty great girders, when spinning the structure at about 1/10th of an rpm would provide the same stiffness and keep it happily aligned with the sun? Then again, "lack of imagination" pretty well sums up the efforts in Earth orbit over the last 30 years.
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