Lunar rocks are rocks that have originated from the Moon's surface and have been collected during various missions to the Moon, such as the Apollo missions. These rocks provide valuable information about the geology, history, and physical properties of the Moon. They have helped scientists to understand the Moon's formation and evolution, as well as its similarities and differences compared to Earth. Analysis of lunar rocks has also provided insights into the history of the solar system and the processes that have shaped celestial bodies in our universe.