In accordance with the Apollo program, nine expeditions were sent to the Moon between 1969 and 1972. Six of them ended with twelve astronauts landing on the Moon's surface from the Bourgeois Ocean in the west to the Taurus Ridge in the east. The tasks of the first two expeditions were limited to flights in selenocentric orbits, and the landing of astronauts on the Moon on one of the expeditions was cancelled due to the explosion of the oxygen tank for fuel cells and the life support system, which took place two days after the launch. The damaged Apollo 13 CC made a flight over the Moon and safely returned to Earth. The first landing site was chosen on the basalt base of the Sea of Calm, located east of the center of the lunar plains. Neil Armstrong (ship commander) and Colonel Edwin Aldrin (lunar cockpit pilot) landed here in the Eagle Lunar Cockpit on July 20, 1969 at 20:17.43 GMT.
Astronauts took many photos of the lunar landscape, including rocks and plains, collected 22 kg of lunar soil samples for study on Earth. Armstrong was the first and last to enter the LC and spent 2h 31min on the Moon. During the sixth expedition to the Moon in December 1972, the crew stayed on its surface for 22 hours and 5 minutes. The length of the trip on the Moon also increased from 100 m, which the first astronauts of Apollo 11 CC walked, to 35 km, which was driven by an electric car by the crew of Apollo 17. The expedition to Apollo 17 was the last expedition to the Moon. During six visits to the Moon, 384.2 kg of rock and soil samples were collected. A number of discoveries were made in the course of the research program, but the most important ones are the following two. Firstly, it was found that the Moon is sterile and no life forms were found on it. Second, it was found that the Moon, like the Earth, has gone through a series of internal warming up periods. The study of the Moon with the help of manned spacecraft was completed after the sixth successful landing of astronauts on its surface with Apollo 17 in December 1972.