BEIJING, Jan 14 (Xinhua) – Night on the moon is dark and cold, but Chinese scientists do not yet know how cold it is. Chang & # 39; e 4 probe, which landed at the beginning of the month for the first month on the hidden side of our natural satellite, will help them accurately determine the prevailing temperature there.
On Earth Day Moon Day is equal to 14, and night duration is equal. The temperature varies considerably from day to night. According to scientific calculations, the highest temperature during the day can reach 127 degrees Celsius, while at night the minimum can reach minus 183 degrees.
In 2013, China launched the Chang e-3 probe, the first spacecraft in the country to land on the moon. After over 60 moon nights that have passed over the past five years, the apparatus's scientific instruments continue to function normally.
"It was a success, but Chang & # 39; e-3 was developed based on the temperature data provided abroad," says Zhang He, Managing Director of Chang & # 39; e-4 Sound Project, and part of the Academy. Chinese space technology (CAST, acronym in English).
"Without our own information on the Moon's temperature, we still don't know how cold the moon's night is," he adds and adds: "Changes in temperature between day and night will be measured by Chang & # 39; so help scientists calculate lunar soil properties."
Tan Mei, CAST Counselor for the project, says that Chang & # 39; e-4 Moon is moving to "Sleep" during the night, because there is no solar energy and at the same time maintains a safe temperature based on the radioisotope of heat sources, collaboration between Chinese and Russian scientists .
"We need to transform the heat into energy to operate the thermometer and thus measure the night temperature," explains Tan.
The landing car is equipped with dozens of temperature data collectors, and the information they collect at night will be sent after the "awakening" probe on the moon day, says Li Fei, a member of CAST and a team of vehicle designers.
Sun Zezhou, the chief designer of Chang & # 39; e-4, as well as a member of CAST, says the probe will get first-hand data for the night of the moon, directly measuring ground temperature, its surface and its internal equipment. .
For the first time in the Chinese spacecraft, the thermoelectric technology associated with the thermoelectric generation technology "Chang & # 39; e-4" is used, and this is the prototype of future deep space exploration, Sun said.
NASA's curiosity researcher also has this technology that does not allow it to be affected by sunlight, and it is a factor that hinders its predecessor, ability and spirit.
"This is the technology we need to master if we want to achieve the Moon's polar regions or the deep space behind Jupiter, where solar energy cannot be used as the main source of energy," the Sun warns.