The term "Half Moon" refers to a specific phase of the lunar cycle when the Moon appears as a semi-circle. This occurs when the Moon is at a 90-degree angle relative to the Earth and the Sun, resulting in half of its surface being illuminated. The Half Moon can be seen in two forms: the first quarter and the last quarter. In astronomy, the Half Moon is significant for understanding the Moon's orbit and its effects on Earth. It plays a role in various natural phenomena, including tides, which are influenced by the gravitational pull of the Moon. Observing the Half Moon can also be a delightful experience for stargazers and astronomy enthusiasts.