Don sidereal days depend on the location of the stars on the celestial sphere- how long it takes them to rise and set?
No, they don’t. Times that stars rise and set depend on your local horizon with respect to the celestial sphere. Whether you see them above the horizon or not, all stars go around the celestial sphere once per sidereal day (imagine that the Earth were transparent- you could see every star make a daily circle in the sky as the Earth rotated!
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- Don sidereal days depend on the location of the stars on the celestial sphere- how long it takes them to rise and set?
