NOVA Online > To the Moon > Lunar Puzzlers
Illustration 1 Here are all the facts you'll need to figure out the answers to the four lunar puzzlers below.
  • It takes the moon 29.5 days to go from one full moon to the next.
  • It takes the Earth 365.256 days to orbit the Sun.
  • From Earth, you can never see the far side of the moon; in other words, the "man on the moon" always faces the Earth, no matter if the moon is full, quarter, or new.