日批在线视频_内射毛片内射国产夫妻_亚洲三级小视频_在线观看亚洲大片短视频_女性向h片资源在线观看_亚洲最大网

   

WORLD / America

NASA to crash space probe into moon in 2009
(AP)
Updated: 2006-04-12 09:05

NASA plans to crash a space probe into the moon in 2009 — a collision so violent it will be visible on Earth through a telescope, the space agency said Monday.


This artist's concept of an impactor spacecraft, released by NASA, shows the upper stage and a 'shepherding spacecraft' approaching the moon. NASA will send the spacecraft to the moon with the launch of the Lunar Reconnaissance Orbiter, scheduled for October 2008. The Lunar Crater Observation and Sensing Satellite will travel independently of the orbiter and crash into the lunar surface to search for water ice. [AP]

The moon crash, part of a larger mission that includes a lunar orbiter, is a quest for ice. Water is the key ingredient for supporting future human outposts on the moon, a goal of the Bush administration.

NASA scientists say the collision should excavate a hole about a third the size of a football field and hurl a plume of debris into space. After the crash of the space probe, the mothership that released it will fly through the plume and look for traces of water ice or vapor — similar to NASA's Deep Impact mission last July, which blasted into a comet.

The moon collision and orbiter will be the first of several lunar robotic projects before astronauts are sent to the moon, targeted for 2018. The entire mission will cost more than $600 million with the impactor project cost-capped at $80 million.

The mission is set to launch in October 2008, with a rocket that carries both the Lunar Reconnaissance Orbiter and impactor. The orbiter will circle the moon for at least a year, mapping the surface, searching for water and scouting for potential future landing sites to send astronauts. The orbiter will pay particular attention to the south pole, which NASA considers a prime candidate for a future outpost.

The lunar spacecraft will target the south pole too, releasing its SUV-sized impactor probe in January 2009 on a suicide plunge at about 5,600 miles per hour toward a frozen crater believed to contain hidden ice.

If ice is found, it could be melted and the water used to help make rocket fuel or oxygen.

"These resources can make (a) future human return to the moon and future human occupation of the moon much more cost-effective," said Butler Hine, robotics deputy program manager at NASA's Ames Research Center in northern California which is developing the impactor.

In the 1990s, several robotic probes found elevated levels of hydrogen, a component of water, around the moon's poles, suggesting ice might lie beneath the frozen surface. But they failed to find vast expanses of it.

The 2008 mission won't be the first time NASA has crashed a robotic probe into the moon. In the 1960s, the space agency launched nine Ranger spacecraft on such a mission, but only three were successful, beaming back close-up pictures as they crashed. The 1999 orbiting Lunar Prospector collided into the moon, but it was considered a disappointment because it failed to kick up a cloud of debris.

 
 

主站蜘蛛池模板: 久久久久 | 欧美精品www | 欧美一二区 | 午夜国产福利 | 亚洲区小说区图片区qvod | 国产va在线观看 | 日韩国产欧美一区 | 超碰在线免费播放 | 亚洲 欧美 日韩 综合 | 91视频精品 | 国产成人免费 | 国产大学生自拍 | 成人黄色在线免费观看 | 亚洲精品国产精品乱码不卡√香蕉 | 又紧又大又爽精品一区二区 | 天天干天天谢 | 日韩精品视频网 | 亚洲欧美综合视频 | 成人在线综合网 | 91精品国产综合久久香蕉922 | 国产 日韩 欧美 精品 | 欧美成人tv | 亚洲精品久久久久中文字幕二区 | 成人免费看片视频在线观看 | 欧美日韩高清一区二区三区 | 国产性―交―乱―色―情人 | 亚洲一区二区三区视频 | 义姐是不良妈妈在线观看 | 欧美日韩中文字幕一区二区 | 日本黄色免费在线观看 | 日本黄色高清视频 | 欧美老司机| 中文字幕在线网 | 六月丁香婷婷网 | 日韩综合色 | 香蕉视频在线网站 | 国产精品1区2区 | 少妇三级| 午夜视频网站 | 成人黄色免费看 | 日本黄色小视频在线观看 |