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You had me doubting myself. I'm pretty sure this would happen with a gibbous Mars or Venus that is farther away than the Sun. But we can't see those phases wit
by jayknight 4y ago
You had me doubting myself. I'm pretty sure this would happen with a gibbous Mars or Venus that is farther away than the Sun. But we can't see those phases with our naked eye, and the effect would be less because they would be pretty close to the Sun in the sky.
- tome 4y agoI reckon if we had a gibbous Venus that appeared to be on the same level as the sun, then it would "appear" to be lit from below(ish) (if we could even see it). Does that match what you expect? EDIT: No, I think that's not even right. This is very mind bending!
- jayknight 4y agoIt depends on where they are along the ecliptic in the observer's sky, I think. Objects appear to rotate with respect to the ground/horizon as the cross the sky. This stackexchange question[1] has some interesting answers. The pictures where the lady is holding a globe and the one that shows the sky as a circle (round horizon) vs a flat horizon are my favorite. [1] https://earthscience.stackexchange.com/questions/14809/what-is-this-sun-and-moon-photographic-anomaly https://earthscience.stackexchange.com/questions/14809/what-... Edit: but ignore the flat-earther in the comments.