Chang’e-4 and Yutu-2 awake after long lunar night
China’s lander Chang’e-4 and rover Yutu-2 have both successfully reactivated from hibernation with the arrival of dawn on the far side of the Moon.
Both the lander and the rover ended the dormant mode automatically according to the elevation angle of the sunlight. And the key instruments on the probe have started to work.
Currently, the rover is located about 18 meters northwest of the lander. Communication and data transmission between ground control and the probe via the relay satellite Queqiao (Magpie Bridge) are stable, said CNSA.
One new detail Chang’e-4 transmitted to Earth is that it found the lunar night on the far side to be colder than what was measured by the Apollo missions on the near side.
“According to the measurements of Chang’e-4, the temperature of the shallow layer of the lunar soil on the far side of the moon is lower than the data obtained by the U.S. Apollo mission on the near side of the moon,” said Zhang He, executive director of the Chang’e-4 probe project, from the China Academy of Space Technology. “That’s probably due to the difference in lunar soil composition between the two sides of the moon. We still need more careful analysis,” Zhang said.
According to this article, the low temperature measured was -190 Celsius (-310 Fahrenheit).
China’s lander Chang’e-4 and rover Yutu-2 have both successfully reactivated from hibernation with the arrival of dawn on the far side of the Moon.
Both the lander and the rover ended the dormant mode automatically according to the elevation angle of the sunlight. And the key instruments on the probe have started to work.
Currently, the rover is located about 18 meters northwest of the lander. Communication and data transmission between ground control and the probe via the relay satellite Queqiao (Magpie Bridge) are stable, said CNSA.
One new detail Chang’e-4 transmitted to Earth is that it found the lunar night on the far side to be colder than what was measured by the Apollo missions on the near side.
“According to the measurements of Chang’e-4, the temperature of the shallow layer of the lunar soil on the far side of the moon is lower than the data obtained by the U.S. Apollo mission on the near side of the moon,” said Zhang He, executive director of the Chang’e-4 probe project, from the China Academy of Space Technology. “That’s probably due to the difference in lunar soil composition between the two sides of the moon. We still need more careful analysis,” Zhang said.
According to this article, the low temperature measured was -190 Celsius (-310 Fahrenheit).