That's an interesting idea.substance wrote: Wouldn`t this be the case if one side of the moon was more positively charged, while the other was had more negative charge? Just an idea, seems logical, I don`t know why.
Take a look here at the Magnetic field of the Moon. Not only does the moon pass through the tail of the Earth's magnetosphere:
In this photo both sides of the moon are shown overlaid with "crustal" magnetic field strength.Roughly once every Lunar orbit, the Moon passes through Earth's magnetotail for approximately 6 days. Interaction with the plasma sheet causes the Moon's surface to become negatively charged. On the Moon's dayside this effect is counteracted to a degree by sunlight...
But on the nightside electrons accumulate and surface voltages can climb to hundreds or thousands of volts. There's growing evidence that fine particles of moondust might actually float, ejected from the lunar surface by electrostatic repulsion.
Here is an APOD photo of the far side of the moon. Vastly different. So depending on whether or not the far side has passed through the Earth's magneto-tail and is, on that side, more negatively charged - I suppose that the near side would be less negatively charged because of being 'counteracted sunlight' supposedly.
Hmmm a very interesting catch.