男友太凶猛1v1高h,大地资源在线资源免费观看 ,人妻少妇精品视频二区,极度sm残忍bdsm变态

·Home
·News
·Video/Audio
·Slideshow
·Shenzhou Mission
·Space Policy
·World Programs
Chang'e I mission may not end with a bang
By Xin Dingding (China Daily)
2007-12-15 08:30


China's first lunar orbiter, Chang'e I, is not likely to crash into the moon at the end of its year-long voyage, as some observers have suggested it might.

An official said on Friday that scientists had come up with several proposals on how to dispose of the lunar satellite at the end of its mission, and two of them are under consideration.

"One is to gradually lower the satellite's orbit from the current 200 km to 100 km, and then 50 km, so we can observe the moon more closely," Hao Xifan, deputy director of the Lunar Exploration Center of the Commission of Science Technology and Industry for National Defense, said at a lecture in Beijing.

The other is to expand the orbit to a level that would enable Chang'e I to observe the whole solar system, he said.

It would be impossible for Chang'e I to fly back to Earth because it does not have enough fuel, he said.

Whatever option scientists choose will depend on the condition of the satellite, he said.

Earlier reports said scientists hoped precise maneuvering might have saved 200 kg of fuel during the satellite's 380,000-km journey to its current orbit, possibly prolonging its lifespan.

 



Copyright 1995-2007. All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form.
主站蜘蛛池模板: 大埔县| 大足县| 连南| 东乡| 边坝县| 安徽省| 贡觉县| 房产| 汕尾市| 曲松县| 浪卡子县| 丹凤县| 苏尼特右旗| 大同市| 临泉县| 广宁县| 苍南县| 舟曲县| 柘城县| 石柱| 伊川县| 大兴区| 霍邱县| 简阳市| 历史| 永嘉县| 景泰县| 河北省| 安图县| 建平县| 白玉县| 延长县| 武强县| 漳州市| 神农架林区| 巨鹿县| 旬阳县| 大新县| 沁阳市| 吉首市| 十堰市|