Science and the future

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Solar system

By

Frank Daninos

THE 01122020 at 14:22

The Chinese Chang’e Mission 5, who left the Wenchang Space Center on 23 November, should land on the Moon very soon Objective: collect around 2 kilograms of samples to return to Earth and analyze in the laboratory a technical feat that has not been achieved for more than 40 General

The landing of the Chinese Chang’e probe 5, the first mission to collect moon rock samples and return them to Earth in over 40 years, is now imminent after take-off on 23 November of the Wenchang Space Center in southern China with the Long March heavy launcher 5. Five days, it entered lunar orbit at an altitude of about 400 and 200 km Then, the 30 November, it split into two different parts, the first one, made up of landing and climb units, preparing to touch the moon star, while the second, composed of the travel unit and the return capsule, would stay in orbit. Perfect and communications from Earth are quite normal. “

The landing must be done smoothly thanks to the old rockets then the collection operations can start quickly, if everything goes as planned, they will last only two or three days and will seek to take samples from the surface up to two meters deep using a percussion drill. The collection will take place near storms, West of the visible side of the moon, near a volcanic formation of about 1000 meters high named Mons Romker in honor of a 19th century German astronomer The peculiarity of these sites is that they are “much smaller” that all those analyzed so far: they are, in fact, dated 1Only 2 billion years, against 31 at 44 billion years Years for Apollo and Luna samples

For memory, the American Apollo missions, thanks to their astronauts, were able to return 382 kilograms of rocks and fine dust between 1969 and 1972 and the Soviet Luna missions, as for them, mechanized, more of 320 grams between 1970 and 1976, or less than a thousand. Once Chang’e 5 must return 2 kilograms of «moon cut» and thus return to these glorious missions with the symbolic aspect and technological prowess, scientific implications may be significant, to date all rocky surfaces of the solar system in particular. In case of success, it will be repeated. Chinese specimens return to Earth in just over two weeks, the 16 or 17 December, first in Inner Mongolia before being transported to Beijing

to the moon
exchange
Chang’e 5

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Chang’e 5, Moon, moon landing, lunar orbit, China, space probe

News – FR – Chinese lander Chang’e 5 is about to land on the moon

Source: https://www.sciencesetavenir.fr/espace/systeme-solaire/la-sonde-chinoise-chang-e5-s-apprete-a-alunir_149642

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