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玉兔二号月球车在月背留下“脚印”

文章来源:admin    时间:2019-01-07

  China's lunar rover, Yutu-2, or Jade1 Rabbit-2, left the first ever "footprint" from a human spacecraft on the far side of the moon late at night on Thursday, after it separated from the lander smoothly2.   中国的玉兔二号月球车周四晚间从着陆器上平稳分离后,在月球背面留下了第一个“脚印”。
    The rover touched the lunar surface at 10:22 p.m. on Thursday, leaving a trace on the loose lunar soil. The process was recorded by the camera on the lander and the images were sent back to the Earth via the relay satellite "Queqiao", the China National Space Administration (CNSA) announced.   Launched on Dec. 8, 2018, China's Chang'e-4 lunar probe, comprising a lander and a rover, landed on the far side of the moon on Thursday morning.   Since the moon's revolution cycle is the same as its rotation3 cycle, the same side always faces the Earth. The other side, most of which cannot be seen from the Earth, is called the far side or dark side because most of it is uncharted.   After the successful landing, experts verified the conditions of "Queqiao", meaning Magpie4 Bridge, which was launched in May of 2018 to set up the communication link between the Earth and the moon's far side, the environment parameter5 of the landing area, the conditions of the probe's equipment as well as the angle of incoming sunshine to make preparations for the separation of the lander and rover, the CNSA said in a statement.   At 3:07 p.m., experts sent the separation order to the probe via "Queqiao".   After receiving the order, Yutu-2, atop the probe, extended its solar panel, stretched out its mast and started to drive slowly to the transfer mechanism6, according to the Beijing Aerospace7 Control Center.   The transfer mechanism unlocked as planned with one side reaching the moon's surface, allowing the rover to descend8 to the surface from the slope.   Chang'e-3, consisting of China's first moon rover Yutu and a lander, was launched in 2013. It was the first Chinese spacecraft to soft-land on and explore an extraterrestrial object.   Like its predecessor9, Yutu-2, capable of enduring vacuum pressure, intense radiation and extreme temperatures, is equipped with four scientific payloads, including a panoramic10 camera, infrared11 imaging spectrometer and radar12 measurement devices, to obtain images of the moon's surface and detect lunar soil and structure.
1 jade      n.玉石;碧玉;翡翠 参考例句:
  • The statue was carved out of jade.这座塑像是玉雕的。
  • He presented us with a couple of jade lions.他送给我们一对玉狮子。
2 smoothly      adv.平滑地,顺利地,流利地,流畅地 参考例句:
  • The workmen are very cooperative,so the work goes on smoothly.工人们十分合作,所以工作进展顺利。
  • Just change one or two words and the sentence will read smoothly.这句话只要动一两个字就顺了。
3 rotation      n.旋转;循环,轮流 参考例句:
  • Crop rotation helps prevent soil erosion.农作物轮作有助于防止水土流失。
  • The workers in this workshop do day and night shifts in weekly rotation.这个车间的工人上白班和上夜班每周轮换一次。
4 magpie      n.喜欢收藏物品的人,喜鹊,饶舌者 参考例句:
  • Now and then a magpie would call.不时有喜鹊的叫声。
  • This young man is really a magpie.这个年轻人真是饶舌。
5 parameter      n.参数,参量 参考例句:
  • It is the parameter of distribution.这就是分布参数。
  • One parameter which always comes into play is the national economy.国民经济是一个经常起作用的参量。
6 mechanism      n.机械装置;机构,结构 参考例句:
  • The bones and muscles are parts of the mechanism of the body.骨骼和肌肉是人体的组成部件。
  • The mechanism of the machine is very complicated.这台机器的结构是非常复杂的。
7 aerospace      adj.航空的,宇宙航行的 参考例句:
  • The world's entire aerospace industry is feeling the chill winds of recession.全世界的航空航天工业都感受到了经济衰退的寒意。
  • Edward Murphy was an aerospace engineer for the US Army.爱德华·墨菲是一名美军的航宇工程师。
8 descend      vt./vi.传下来,下来,下降 参考例句:
  • I hope the grace of God would descend on me.我期望上帝的恩惠。
  • We're not going to descend to such methods.我们不会沦落到使用这种手段。
9 predecessor      n.前辈,前任 参考例句:
  • It will share the fate of its predecessor.它将遭受与前者同样的命运。
  • The new ambassador is more mature than his predecessor.新大使比他的前任更成熟一些。
10 panoramic      adj. 全景的 参考例句:
  • Most rooms enjoy panoramic views of the sea. 大多数房间都能看到海的全景。
  • In a panoramic survey of nature, speed is interesting because it has a ceiling. 概观自然全景,速率是有趣的,因为它有一个上限。
11 infrared      adj./n.红外线(的) 参考例句:
  • Infrared is widely used in industry and medical science.红外线广泛应用于工业和医学科学。
  • Infrared radiation has wavelengths longer than those of visible light.红外辐射的波长比可见光的波长长。
12 radar      n.雷达,无线电探测器 参考例句:
  • They are following the flight of an aircraft by radar.他们正在用雷达追踪一架飞机的飞行。
  • Enemy ships were detected on the radar.敌舰的影像已显现在雷达上。

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