China reaches far side of moon: What is the far side of the moon? Does the moon rotate?

This achievement is a major milestone in space exploration.

While there have been many Moon missions over recent years, they have all been to orbit, flyby or impact.

Previous Moon missions have landed on the Earth-facing side, but this is the first time any craft has landed on the unexplored and rugged far side.

The last time a crewed vessel landed on the Moon was Apollo 17 in 1972.