Welcome to the first no-complain Wednesday. Instead of ranting and screaming hopelessly into the void I present you with: How to move a planet. So, you want to move a planet, let's say Earth. Why? Who knows, fun and profit? Warmer winters? Well you can't just get a bunch of ion drive powered ships lined up somewhere on the surface and push. But, the moon tugs on the Earth. Maybe you could very slowly influence the Earth's orbit by moving the moon instead. Of course that's also impossible but it is a easier problem than moving the whole Earth. What if the moon had a moon. Something smaller and less dense than the moon but dense enough that it's gravity would tug on the moon? Then you could slowly influence the orbit of the moon by tugging on it with moon2. But, to be that massive it would still probably be too large to push with whatever we have. What if moon2 had a moon, moon3? and moon3 had moon4 and on and on. Somewhere along the line is moon-n, a moon that's big enough to tug on moon n-1 but light enough we could push it with something, maybe nukes? I guess it's a bit like dominos except you start with a domino-sized domino and end with a knocking down the great wall of China or something. .