The moon doesn't have a dark side, although there's always part of it in the dark just as there's always a part of Earth that's experiencing night. There is a far side of the moon that we can't see from Earth: because of the way the moon orbits, it always keeps the same side facing us. But the far side is light just as often as it is dark.
Top 10 Things You Didn't Know About the Moon
NASA has sent two probes on a collision course with the moon in hopes that the impact will reveal signs of water. That's right: water on the moon. A look at some more little-known facts about that pie in the sky