Everypony listen to me! Celetia has been lying ot us all along! She doesn't raise or lower the sun, she doesn't control the sun at all! The sun doesn't move around us.
The sun is actually gigantic, exponentially bigger than our world, and this world swings around it in a loop like a ball on a string. But the moon swings around us, and it's tiny, much smaller than our world. Luna doesn't control that either, that's part of the ruse. The reason they look the same size in the sky is because the moon is so much closer to use than the sun.
You have to understand, we've been living under the rule of false gods. The princesses control nothing, not the sun or the moon or any of it! You have to believe the truth!