An interesting one that was considered was Project A119: >...Project A119, also known as A Study of Lunar Research Flights, was a top-secret plan developed in

An interesting one that was considered was Project A119: >...Project A119, also known as A Study of Lunar Research Flights, was a top-secret plan developed in 1958 by the United States Air Force. The aim of the project was to detonate a nuclear bomb on the Moon ... https://en.wikipedia.org/wiki/Project_A119 https://en.wikipedia.org/wiki/Project_A119