Lyrle t1_iwuprni wrote
Reply to comment by bstabens in Is it possible for two planets to orbit each other in a way where Planet A is tidally locked to the sun while Planet B is in geostationary orbit on the dark side of Planet A, thus putting Planet B in a constant total solar eclipse? by FenrirButAGoodBoy
No, not possible. Orbital speed is a function of distance between the two bodies, with closer orbits having faster speeds. This compounds with closer orbits also being shorter paths. The lit planet would be going around its star faster than the eclipsed planet, which would then un-eclipse it.
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