Her future's not looking better either by that logic. The moon is slowly falling out of orbit with the Earth. In millions of years, it'll be flung off into the void. Effectively, the two best friends grow apart until they stop talking to each other or even see one another. :<

I feel like Hadean earth-chan ought to be an adorable kindergartener/grade schooler seeing how young earth is at the time, only 500 million years about. Though I doubt the internet could handle that level of cuteness. It would probably involve a baby moon-chan as well.