A team based at NASA used computer simulations to “erase” thousands of craters from the Moon’s surface, as if turning back the clock 4.25 billion years to a time before the craters formed. They found that the locations of the Moon’s North and South Poles moved slightly over this time period.
Click here for original story, NASA Study: Small Craters Add Up to Wandering Poles on Moon
Source: NASA Goddard Center