system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: If the moon has a big heavy mass that is not in the center, why is it on the far side of the moon and not the side closest to us?
gpt
You know how, when you hang a bucket of water by a rope and spin it around really fast, the water presses to the bottom of the bucket, the side farthest from the center of the spin? It's like that, except with big rocks held together by gravity.