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约翰·格伦斯费尔德(JohnGrunsfeld)是美国航空航天局(NASA)“哈勃”太空望远镜项目的首席科学家,同时作为主任飞行机械师和宇航员的他,曾4次执行太空飞行任务。当时他身穿增压服,走出航天飞机来到位于同温层、以时速18000英里环绕地球轨道飞行的“哈勃”太空望远镜上行升级和修理……由于不赞同NASA做出的停止对“哈勃”望远镜进行维护的指令,格伦斯费尔德设计了一个机器人,如果一切顺利的话,它将于2007年下半年被送上太空对“哈勃”进行维修,可将造价达15亿美元的太空望远镜的寿命延长3至8年。最近,格伦斯费尔德完成了自己的另一个“使命”:首次成功地登上了位于阿拉斯加的北美洲最高峰——德纳里峰(即麦金利山)。不久前,美国《国家地理探险》杂志对格伦斯费尔德进行了一次采访。
John Grunsfeld, chief scientist of the NASA Hubble Space Telescope project, has also performed space missions four times as chief flying mechanic and astronaut. At that time he was in a booster suit, stepping out of the space shuttle to the Hubble Space Telescope on the stratosphere, which flew around 18,000 miles orbiting Earth orbit. Upgrading and repairs went up due to disapproval of NASA’s halt Grundfos devised a robot that would be sent to space in the second half of 2007 to repair Hubble for as much as $ 1.5 billion The life of the space telescope extended 3 to 8 years. Recently, Glensfeld completed another “mission” for himself: for the first time successfully landing on Denali Peak (Mt. McKinley), the highest point of North America in Alaska. Not long ago, the U.S. National Geographic Adventure conducted an interview with Grunsfeld.