When I was a kid, I had a book on the Apollo-Soyuz Test Project (ASTP) of 1975 by Alexei Leonov, one of the cosmonauts. Among the interesting things the project did was produce an artificial eclipse, Apollo maneuvering in front of the sun so Soyuz could see the corona.
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Interesting that even though there is no atmosphere in space so the sky is dark, the sun is still too bright to see the corona. Wonder how light pollution works in space... how far of an angle do you need away from sun to see stars clearly?
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The ASTP book was probably my favorite space book (I had a few) as a kid. Still one of my favorite missions. Been thinking about eclipses as an allegory this week, where the brightness of a core thing prevents you from seeing things around it.
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It's like tunnel vision, but not quite. Instead of peripheral blindness being caused by walls, it is caused by the extreme brightness of the core. Any "core" which has reached some sort of critical energy output state has that sort of blinding effect. Need eclipse to see past it.
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