The gravitational interaction between the Earth and Moon has led to one hemisphere of the Moon being locked facing away from Earth. Don't be misled, though. The Moon does rotate, it just takes as long to rotate once on its axis as it takes to complete an orbit of Earth. This is known as synchronous rotation, and on the far side, there is a massive crater called the South Pole-Aitken basin. Spanning over 1,930 km from north to south and 1,600 km east to west. This ancient impact crater formed