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 WELTRAUM: ChinaS Chang’e-4 Mondmission infographic

Chinas Mission zur dunklen Seite des Mondes

12/04/2018
Graphic News

December 7, 2018 -- Chinas Chang’e-4 ist das allererste Landefahrzeug, das auf der dunklein Seite des Mondes landen wird. Zu den Aufgaben der Mission gehören Versuche mit Pflanzen und Abhören von Radiosignalen, die normalerweise von der Erdatmosphäre blockiert werden.

Named after the mythical moon goddess Chang’e, the mission is due to land in the Aitken Basin of the south pole in early January. The region is a vast impact region measuring some 2,500km in diameter and 13km deep, and it is the single-largest impact basin on the Moon and one of the largest in the Solar System.

Because the Moon rotates around its axis at the same speed as it orbits the Earth, we never see the far side from the ground. The lack of direct sight means the mission requires a relay satellite to enable communications between Earth-based mission control and the spacecraft. A relay satellite, named Queqiao, was launched in May to transmit signals.

The Chang’e-4 lander carries three scientific payloads, respectively, developed by the Netherlands, Sweden and Germany.

Dutch-Chinese low-frequency radio spectrometers on the lander and relay satellite will observe 21-cm hydrogen line radiation and study how the universe emerged after the Big Bang. Radio and television signals blight earth-based attempts to see these faint 21-cm signs from the Cosmic Dawn -- the far side of the Moon offers shelter from these transmissions.

Chang’e-4’s rover carries a small advanced analyser for neutrals, developed in Sweden, to study the interaction between solar winds and the moon surface.

A German-developed neutron and radiation dose detector on the lander will measure radiation levels -- crucial for long-term human occupation of the Moon. China ultimately hopes its efforts will lead to a crewed lunar landing, the first since NASA’s Apollo programme ended in 1972.


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