The Chinese probe Chang’e-4 discovered that the temperature of the lunar surface is colder than expected, since it drops below 190 degrees Celsius and is lower than the data obtained by the US Apollo mission. US On the near side of the Moon.
The Chinese probe Chang’e-4, launched on December 8, landed in the Karman Von Crater in the South Pole Basin-Aitken on the other side of the Moon on January 3.
This was the first time that Chinese scientists received first-hand data about the surface temperatures on the other side of the Moon during the lunar night, the Xinhua news agency reported on Thursday.
“According to the Chang’e-4 measurements, the temperature of the shallow layer of the lunar soil on the opposite side of the Moon is lower than the data obtained by the Apollo mission of the United States on the near side of the Moon, “said Zhang He, Executive Director of the Chang’e-4 survey project.
“This is probably due to the difference in the composition of the lunar soil between the two sides of the Moon, we still need a more careful analysis,” Zhang said.
The rover and landing module of the Chang’e-4 probe woke up after a long “sleep” during its first extremely cold night on the moon, the National Space Administration of China announced on Thursday.
As a result of the tidal block effect, the revolution cycle of the Moon is the same as the rotation cycle and the same side of the Moon always faces the Earth.
A lunar day equals 14 days on Earth and a lunar night has the same duration. The Chang’e-4 probe changed to inactive mode during the lunar night due to lack of solar energy.
The rover and the lander carried the radioisotope’s heat source, which helped keep the probe warm during the lunar night.
The report also notes that the lander is also equipped with an isotope thermoelectric cell and dozens of temperature data collectors to measure temperatures on the surface of the moon during the lunar night.