一级做a免费观看大全视频,中文字幕乱码无限2019,日日麻批40分钟免费视频播放,精品专区性色av,国产性夜夜春夜夜爽,岛国三级片免费看久久,久久五月天和激情网

China's Chang'e-4 probe resumes to work after lunar night

Source: Xinhua| 2019-03-01 16:40:37|Editor: Xiang Bo
Video PlayerClose

The lander and the rover of the Chang'e-4 probe have been switched to dormant mode for the lunar night after working stably during the past lunar day, the China National Space Administration (CNSA) announced on Feb. 13. (Xinhua/China National Space Administration)

BEIJING, March 1 (Xinhua) -- The rover and the lander of the Chang'e-4 probe have resumed work after "sleeping" during their second lunar night on the far side of the moon.

The lander woke up at 7:52 a.m. Friday, and the rover, Yutu-2 (Jade Rabbit-2), awoke at about 10:51 a.m. Thursday. Both of them are in normal condition, according to the Lunar Exploration and Space Program Center of the China National Space Administration.

China's Chang'e-4 probe, launched on Dec. 8 in 2018, made the first-ever soft landing on the Von Karman Crater in the South Pole-Aitken Basin on the far side of the moon on Jan. 3.

A lunar day equals 14 days on Earth, and a lunar night is the same length. The Chang'e-4 probe switched to a dormant mode during the lunar night due to the lack of solar power.

As a result of the tidal locking effect, the moon's revolution cycle is the same as its rotation cycle, and it always faces Earth with the same side.

The far side of the moon has unique features, and scientists expect Chang'e-4 could bring breakthrough findings.

The scientific tasks of the Chang'e-4 mission include low-frequency radio astronomical observation, surveying the terrain and landforms, detecting the mineral composition and shallow lunar surface structure, and measuring neutron radiation and neutral atoms.

The Chang'e-4 mission embodies China's hope to combine human wisdom in space exploration, with four payloads developed by the Netherlands, Germany, Sweden and Saudi Arabia.

KEY WORDS:
EXPLORE XINHUANET
010020070750000000000000011100001378606141


一级做a免费观看大全视频,中文字幕乱码无限2019,日日麻批40分钟免费视频播放,精品专区性色av,国产性夜夜春夜夜爽,岛国三级片免费看久久,久久五月天和激情网 国产视频观看91 国产00在线视频国产 国产综合色视频久久久 久久成人国产精品一区二区 高清无码免费黄色网站