this post was submitted on 21 Aug 2026
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[–] Kazumara@discuss.tchncs.de 1 points 12 hours ago

But if you widen a 20m diameter mirror to a 5km diameter illuminated area you get 250*250 = 62'500 times less light energy per area, compared to the same spot in direct daylight. Or only 6.4 times brighter than the moon, calculating from your factor of 400'000.

For the stated goal of solar power, this would be completely useless. Well not completely, just 62'500 times worse than during daytime.