# How would a nuclear blast on the moon affect its orbit? [duplicate]

Something I'm contemplating: If one faction destroys a large structure of an enemy faction with a nuclear device equivalent to a WWII atomic bomb on the moon. Would the force of the explosion be enough to push the moon off its orbit to some extent?

• This is an example of a scale error. Teaspoons can shift water, so can you empty the ocean wit a teaspoon? Commented Jul 16, 2016 at 4:17

There would be no measurable effect.

Little Boy had a yield of $6.3×10^{13}$ joules. If you could direct all that energy into changing the orbit of the $7.3×10^{22}$ kg Moon, it would speed it up or slow it down by 0.00000000086 meters per second.

• Little Boy was a comparatively small and inefficient nuclear warhead, though. But even the biggest one ever detonated would not have a measureable impact on the moon orbit. Commented Jul 15, 2016 at 23:43

No, the force of an Atomic blast isn't enough to significantly alter the Moon's orbit. Even the combined force of humanity's current nuclear stockpile is only enough to offset it the Moon's orbit by an unimaginably small amount.