US Military's Near Miss: Almost Nuked the Moon.

In the late 1950s, the US military considered detonating a nuclear bomb on the surface of the moon as part of a project codenamed A119, which was partly intended to one-up the Soviet Union in the space race. The project was revealed by physicist Carl Sagan, who had worked on the project and came up with the nuclear concept. The proposal was considered for scientific, military, and political reasons, but ultimately failed to launch due to lack of funding and attention.