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Chinese biz baron wants to shove his artificial moon where the sun doesn't shine – literally

Cynic_999 Silver badge

"This is complete utter nonsense. A quick back-of-envelop calculation: The sun has an angular diameter of 0.0093 radians, so "focusing" the sun's rays from a distance is optically impossible"

Hmmm - never heard of parabolic reflectors???

It is perfectly possible to make a parabolic reflector that has a focal distance of several hundred kilometres. Besides, it has already been done - see the earlier reference in these comments to the Russian experiment.

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