>From the ISS's perspective it sees the sun set. When the Sun is just on the edge of the horizon it sees a redish light so the ISS starts to turn red. After the sun sets the ISS still sees a large arc of the earth's atmosphere as a bright red sunset arc. At this point the ISS is getting quite dark brown. At some point after this the ISS sees no 'sunset' light at all, it should be too dark to see even I would expect in a full moon but not sure about that. The earthshine concept isn't right - there is no earthshine once the sun sets behind the earth's limb. Maybe moonshine but no earthshine. The moon sees earthshine when it is a thin crescent and the earth see's moonshine especially when full. - George Roberts http://gr5.org -----Original Message----- From: Bob King Sent: Sunday, May 01, 2011 8:36 PM To: seesat-l@satobs.org Subject: Why is ISS still visible in Earth's shadow? Hi everyone, I've always wanted to ask this question. No doubt some of you have followed the space station into Earth's shadow, where it's visible for some time with binoculars. Is it being illuminated by the moon or ??? Thank you for your help! Best wishes, Bob _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-l _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-l
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