Equestria Daily sometimes forget that Celestia could slam the sun into Equestria at a whim. Can a ruler stay completely sane for thousands of years? What might happen that would throw her over the edge? <-- Oh gee I don't know JUST ASK POOR LUNA!
:'( So Sad BTW, I Didn't Make this! Alicorns live a lot longer than regular ponies, if they're not immortal, I'm not sure. But Celestia and Lunar are both over a thousand years old. That means Twilight will have to live a long time without them