Note that the following sets of computations assume that magic is bound to conservation of energy, and that Equestrian physics closely or exactly match our own. Furthermore, they ignore the possibility of Equestria's sun being a small artificial construct, and are heavily simplified so I could do them in less than an hour.

This data is meant to apply to HiE or PoE stories where it can be assumed that physics are similar enough that humans can survive in Equestria, or po ies oh Earth.

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