it’s not the ‘dark’ side of the moon exactly, it’s the far side of the moon. It does get sunlight, but it always faces away from the Earth.
The moon is rotating at exactly the same speed that the earth and moon are revolving around each other, so the moon never shows us its back.
This is because it’s [“tidally locked.”](https://en.wikipedia.org/wiki/Tidal_locking)
Latest Answers