It's straightforward: throw the moon off in the direction of Earth's motion around the sun. The Earth has 81 moon-masses, so you'd have to throw the moon 81 tim

It's straightforward: throw the moon off in the direction of Earth's motion around the sun. The Earth has 81 moon-masses, so you'd have to throw the moon 81 times faster: still less than 1% of the speed of light. That'd take considerable energy, but the sun outputs 3.846×10^26 W, so we'd only need 17 years of total solar output. It'd be a lot easier to just roast the Earth's surface, it's true. (I haven't read the original post in a long time, but had thought about it myself before.)