Strange things happen at full moon

On the moon's dayside this effect is counteracted somewhat by sunlight: Photons knock electrons back off the surface, lessening the negative charge. But on the night side, electrons accumulate and the charge can climb to thousands of volts.

The extreme differences in charge might cause dust to fly from the negative night side to the less-negative day side, becoming strongest along the regions where the sun is rising or setting.

Astronauts walking on the charged terrain might get electrified like sock from a hot dryer. "Touching another astronaut, a doorknob, a piece of sensitive electronics — any of these simple actions could produce an unwelcome zap."

Shocking!

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Even a man who is pure in heart
And says his prayers by night
Can turn into a wolf
when the wolfbane blooms
And the moon is full and bright.