Videos from spacecraft Chang'e-4 Chinese mission, as landing on the moon on January 3, 2019. An ancient conflict on the Moon left behind a huge crater called Aitken, 13 km depth. It is believed that the huge crater that probably exposes the deep lunar crust and mantle may. If the Chang'e 4 can find and study materials in the crater, will have a detailed view of the internal structure and origin of the moon.