Q. How many full moons are ther in one year?
A. There is a full moon every 29 days, so there are 12 or 13 full moons in one year. A full moon occurs when the entire half of the moon visible to earthlings is reflecting light. This happens when the Earth is directly between the moon and sun. That is, when we see the full moon, the sun is at the back of us, and the side of the moon that faces Earth is also facing the sun straight on. So the moon reflects the light back to us--unless, of course, it's cloudy!