The Lunar Far Side refers to the hemisphere of the Moon that is always facing away from the Earth. This side was first observed by humans in 1959 when the Soviet spacecraft Luna 3 captured images of it. Unlike the near side, which has large, dark plains called maria, the far side is characterized by a rugged landscape with many craters and fewer maria. The far side of the Moon is also of great interest to scientists because it is shielded from the radio noise of Earth, making it an ideal location for astronomical observations. Missions like Apollo 16 and various robotic landers have explored this region, providing valuable data about the Moon's geology and history.