Equestria, and the world it's part of, is part of a Discworld
Eqestria is on a round planet. This has been demonstrated multiple times.
An Introverted Pony I go with the FOE model. That it's not so much a direct, must raise them every morning, type thing, but that they just give them a little nudge that keeps them both going in a constant pattern. That without them actaivly controlling them, they would eventually, as in centuries, grow erratic, or even stop
Lesson Zero shows that Celestia nudges the Sun along in small steps.
The fact that Discord moves the sun and moon without moving the stars confirms that he's not just rotating the planet.
Think about when Luna was banished.
The Moon kept going. Celestia had to say that she was controlling both, but the sheer energy needed would've exhausted her, yet Celestia has always had at least some energy in her.
When you can move the Sun, adding the moon doesn't make a noticible difference.
I don't think Celestia can even lift the sun. She's insanely powerful, sure, but the Sun weighs a metric fuckton. If Celestia can lift the sun, how couldn't she take down a bug full of holes?
By the bug full of holes being more powerful. Possibly capable of lifting
two suns. Seriously. This isn't a difficult concept. I don't know why so few get it.
Again that's assuming that the sun there is the same as ours. It could be that sun is actauly a lot smaller, and a lot closer, and is actually orbiting the planet.
Unlikely as they have our constelations.
How small do you want it to be anyway?
You'll note that the sun didn't rise during the Nightmare Solstice.
Indeed.
Nightmare's plan was to assimilate Celestia and the Element's power, become the most powerful pony that ever lived, then destroy the sun.
While this requires less power than moving it at the
speeds they do, it is still more difficult than moving it
at all.
Given that the ordeal happened after Celestia was supposed to be revealed I kinda figured the second episode began at 'dawn'.
Indeed. They even said that they had been up all night.