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What is the horizon-ecliptic angle formula?

Meeus gives the equation for the angle between the ecliptic and the horizon in Astronomical Algorithms, eq 14.3. $$ \cos I = \cos \epsilon \sin \phi - \sin \epsilon \cos \phi \sin \theta $$ $ \epsilon ...
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Is there any way for a planet orbiting a red dwarf in the habitable zone to not be tidally locked?

Tidal locking necessarily requires mass asymmetry. In planet formation central limit theory suggests many uniform density/mass planets are formed around red dwarf stars as their rotation initially ...

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