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"Chang'e 5" successfully launched, striving to realize the four "firsts" of China's aerospace

  CCTV News: The Chang'e Project has previously completed the missions of Chang'e 1, 2, 3, 4 and 5 T1 testers. Each mission has made a breakthrough on the basis of the previous mission. The mission of the "Chang'e 5" is to strive to achieve China's four "firsts."   Automatic sampling on the lunar surface for the first time   In this mission, the "Chang'e-5" lander and ascender will automatically complete the lunar soil collection on the surface of the moon and package the samples into the ascender. As the first sampling, taking more and taking less is not the key point, it is success if you get it.   Take off for the first time from the moon   After the "Chang'e 5" landing complex completes sampling, the ascender will take off from the lunar surface to bring the samples into orbit around the moon. This is the first time that a spacecraft in my country has launched from the lunar surface.   The first unmanned rendezvous and docking in the lunar orbit 380,000 kilometers away   After the ascender rises to the orbit around the moon, it will rendezvous and dock with the orbiter and returner assembly, and transfer the collected samples to the returner. Previously, the rendezvous and docking carried out by our country were carried out on the orbit around the earth, and the rendezvous and docking on the orbit around the moon is farther and more challenging.   For the first time, the lunar soil returned to Earth at a speed close to the second universe   Although returning to Earth at a second cosmic speed close to 11.2 km/s is not a new subject of my country's aerospace engineering, the returnr carries precious lunar soil, which puts forward higher requirements for the safety of the returner.
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