The Dark Side of the Moon wasn’t always “dark”

Actually, it’s more like that the far side of the Moon may have been the near side.  According to this Scientific American article, it appears that our

natural satellite was once rotated 180 degrees, with the current far side of the moon facing Earth. A large impact roughly four billion years ago could have temporarily disrupted the moon’s rotation, the researchers say, allowing it to eventually settle back into so-called spin-orbit synchrony either in its original orientation or rotated 180 degrees.  

I’m glad I didn’t know this when I was spacing out to Floyd back in the day…

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