impossibilities in equestria

i was re-watching some mlp a little while ago (and this has been on my mind for a while) and i though, how strong magic would luna need to move the moon? and then i got into math and physics a lot (not gonna explain it cus i wouldn't be able to and would take too long)
and figured out that to simply stop the moon it would take 1,859,550,000,000,000,000,000 newtons. thats really a lot. so either it's an illusion of how the two sisters move the sun and moon, or they are a lot stronger than they let on. REALLY a lot stronger. so then how did they get defeated the numerous times they did? my theory is to bring out the main six, and reach their full potentials, but thats not what this is about. the sun is about 400 times the mass of the moon, so the pure magical energy to move that thing (if they even do move the sun and moon) is mind boggling! that is fucking insane! how the fuck can anything do that?! i don't even know how anything would be able to do that and i'm out going to try to figure it out right now. i'm just going to go rework my whole view of equestria over a bin of ice cream...