What If? by Randall Munroe

What If?: Serious Scientific Answers to Absurd Hypothetical Questions
by Randall Munroe

One time I figured out how much the moon would weigh if it were on Earth instead of in orbit. This is like that but if all of the consequences of putting the moon on Earth were taken into account and the calculations were done by someone who actually, probably, knows what they’re doing.

<3D