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I'm assuming during an EVA when an astronaut is facing the station reflected sunlight reduces an astronaut's dark adapted vision to the point they can no longer see the stars until either the station enters the Earth's shadow or they turn their back on the structure. Based on reports from Apollo astronauts.
If the same holds true for astronauts in a Soyuez or a space shuttle approaching the station, how close do they have to be that they no longer see the stars?

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    $\begingroup$ There is a very large object exposed to the Sun nearby, the Earth. If they have the day side of Earth in view, their eyes could not adapt to dark. $\endgroup$ – Uwe Oct 11 '19 at 18:54
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    $\begingroup$ Quite, I think its still an interesting notion. Perhaps there's an alternate way to express the question such as "at what magnitude will an object spoil one's dark adapted vision" $\endgroup$ – Puffin Oct 11 '19 at 21:37
  • $\begingroup$ @Puffin Good point about a better way to express the question, but wouldn't that be a biology SE question? $\endgroup$ – Bob516 Oct 12 '19 at 0:56
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    $\begingroup$ @Bob516 Yes, you're right. If one was going to try to evaluate an answer to the question from the bottom up then it would have two parts, one being the biology bit and the other (perhaps the bit you are after) being how to calculate the magnitude of nearby objects $\endgroup$ – Puffin Oct 12 '19 at 19:20

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