The far side of the moon looks very different from the near side, and with the Chang'e 6 mission, scientists are hoping to learn why.

December 7, 1972 was the launch of the final mission in NASA's Apollo moon program. Fifty years later, NASA finally seems poised to return people to the lunar surface.

It's the first time in over 40 years that fresh lunar samples are being brought back to Earth. Scientists hope to gain a better understanding of lunar volcanic activity and the age of various craters.