China's unmanned lunar probe Chang'e-5, set to be launched around December 2017, will bring lunar soil samples back to Earth, says Wu Yanhua, deputy chief of the China National Space Administration.
中国国家航天局副局长吴艳华表示，无人月球探测器嫦娥5号将从月球上带回土壤样本，该探测器预计将于2017年12月发射。
The just-concluded Chang'e-3 mission marked the completion of the second phase of China's lunar program, which included orbiting and landing on the moon and returning to Earth. The third phase, which includes unmanned sampling before returning to Earth, will follow the launch of Chang'e-5.
According to Ye Peijian, an expert with the China Aerospace Science and Technology Corporation Fifth Research Academy, Chang'e-5 will consist of the orbiter, the return vehicle, the ascender and the lander. The orbiter and return vehicle will orbit the moon, while the lander and ascender will land on the moon.
After the lander finishes taking samples, the samples will be placed in containers carried by the ascender, which will then dock with the orbiter and the return vehicle. The samples will be transferred to the return vehicle, which will eventually bring them to Earth.
Hu Hao, the chief designer of the third phase, said Chang'e-5 weighs 8.2 tons and will be launched by the rocket Long March 5.
The mission is expected to achieve five firsts for China since the country initiated its space exploration programs: first unmanned sampling, first takeoff from the moon's surface, first unmanned docking on the moon orbiting 380,000km from Earth, and first return to Earth with lunar soil samples at a speed close to the escape velocity.
相关单词：aerospace
aerospace解释：adj.航空的，宇宙航行的
aerospace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。
相关单词：initiated
initiated解释：n. 创始人 adj. 新加入的 vt. 开始，创始，启蒙，介绍加入
initiated例句：
He has not yet been thoroughly initiated into the mysteries of computers. 他对计算机的奥秘尚未入门。
The artist initiated the girl into the art world in France. 这个艺术家介绍这个女孩加入巴黎艺术界。
相关单词：velocity
velocity解释：n.速度，速率
velocity例句：
Einstein's theory
The velocity of light is
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