The natural satellite that orbits Earth is the Moon. It is the fifth-largest moon in the solar system and is the only celestial body outside of Earth that humans have visited, beginning with the Apollo missions in the 1960s and 1970s. The Moon has a significant impact on Earth, influencing tides and stabilizing the planet's rotation. It consists of various geological features like craters, mountains, and plains, and its appearance changes with phases such as new moon, full moon, and others. Cultural significance has surrounded the Moon throughout history, inspiring art, mythology, and scientific inquiry.