A full moon occurs when the Moon is on the opposite side of the Earth from the Sun, allowing it to be fully illuminated. This phase happens approximately once a month, as the Moon orbits the Earth. The full moon appears as a bright, round disk in the night sky and can vary in size and brightness depending on its distance from Earth. Different cultures have various names for full moons, often based on seasonal changes. For example, the January full moon is known as the Wolf Moon, while the October full moon is called the Hunter's Moon. These names reflect the activities and natural events associated with each month.