英语翻译Discovery has been a regular visitor to Earth's orbit si

英语翻译
Discovery has been a regular visitor to Earth's orbit since its maiden flight in 1984.It is the oldest and longest-serving vehicle in the U.S.space agency’s shuttle fleet.Discovery’s final flight follows several delays due to technical problems and repairs to its external fuel tank,but NASA’s mission launch director Mike Leinbach says the shuttle is still space-ready.
"It’s her 39th mission and [there] would have been quite a few left in her had the program been extended,but it wasn’t," he says."It is a kind of bittersweet to get the last flight out of her,but she’s going to perform perfectly fine in orbit and bring the crew home safely."
Discovery’s 11-day mission is a supply run to the International Space Station.On board are 3,855 kilograms of cargo including a large supply closet,a replacement radiator and a humanoid robot helper named Robonaut 2.
NASA
Robonaut (R2),the dexterous humanoid astronaut helper,flexes its mechanical muscles prior to its transport aboard space shuttle Discovery to the International Space Station.
Over its long career in space,Discovery has been a real work horse says Valerie Neal,shuttle curator at the Smithsonian’s National Air and Space Museum in Washington."It’s delivered satellites.It’s picked up and repaired satellites.It’s flown scientific laboratories.It delivered the Hubble Space Telescope and then returned twice to service it.It flew twice to the Russian Space Station MIR and then 13 times to the International Space Station."
The Discovery is linked to many historic firsts.It was first to return to space after fatal accidents destroyed its sister ships,Challenger and Columbia.It was the first to have a woman pilot.And Neal says that,despite the inevitable dangers of spaceflight,Discovery has played a major role in making it more routine.
“Certainly since the space shuttle began to fly,we’ve had people going up five,six,seven eight,nine times a year," she says."We had no precedent for flying into space for 30 years in the same vehicles over and over.That’s approaching routine spaceflight."
NASA
At NASA's Kennedy Space Center in Florida,space shuttle Discovery's STS-133 crew on the Shuttle Landing Facility runway.
NASA plans two more missions,one each for the remaining two orbiters,Endeavor and Atlantis,before the Shuttle program ends later this year.
NASA will then have to rely on European,Russian and Japanese rocket launches to carry astronauts and supplies into orbit until commercial U.S.space ferries become fully operational,possibly within the next five years.In the meantime,plans are still being worked out for putting Discovery and the other retired space shuttles on permanent museum display.
The space shuttle Discovery is prepared for launch at the Kennedy Space Center in Cape Canaveral,Florida,on Feb.23,2011.

已经发现了一个常客地球轨道首航自1984年.这是最古老的、时间最长的车辆在美国太空总署的飞船舰队.“发现”号的最后的飞行遵循多次延误由于技术问题及修理它的外部燃料槽,但美国国家航空和宇宙航行局的任务发射总指挥迈克回机修库航天飞机还space-ready说.
“那是她的39任务和相片]就完全几落在她有程序延伸,但是却没有.”他说.“这是一种苦中带甜的得到最后飞离她,但她要执行晴空万里,将在轨道上的船员安全回家.”
发现号为期11天的任务是提供一跑到国际空间站.在董事会有3,855公斤的货物包括大量的壁橱里,更换水箱,仿人形机器人名叫Robonaut帮助2.
美国国家航空和宇宙航行局
Robonaut(R2),这只机灵的人形宇航员帮手,弯曲它的机械肌肉在运输前“发现号”航天飞机去国际空间站.
漫长的职业生涯在空间上的展布、发现已经是一位真正的工作马说瓦莱丽·尼尔,航天飞机策史密森国家航空航天博物馆在华盛顿.“这是救了卫星...这是飞科学实验室.人送来哈勃太空望远镜,然后返回两次服务.它飞两次俄罗斯和平号空间站,然后13次国际空间站.”
这一发现是与许多历史悠久的第一.这是第一次回到空间致命事故破坏了妹妹船舶、挑战和哥伦比亚.这是第一个女人飞行员.和尼尔表示,尽管不可避免的危险的航天、发现方面发挥了重大作用,在让它更习惯.
“当然,由于航天飞机开始飞逝,我们有许多人上涨五,六,七八,九次,”她说.“我们没有先例可循太空飞行30年来在同一款车.那是接近常规航天.”
美国国家航空和宇宙航行局
美国国家航空和宇宙航行局在佛罗里达的肯尼迪宇航中心,“发现号”航天飞机的STS-133组员进行设备着陆跑道起飞的.
国家航空和宇宙航行局计划两个任务,分别为剩馀的两个轨道航行器、勇气和亚特兰提斯岛,在航天飞机计划结束今年晚些时候.
美国国家航空和宇宙航行局将不得不依赖于欧洲、俄罗斯和日本的火箭发射携带宇航员和急需品到飞行到商业美国太空渡轮成为全面投入运作,可能在未来的5年.同时,还在计划把发现与其他退休的永久航天飞机博物馆展示.
发现号航天飞机发射都做好了准备肯尼迪航天中心在佛罗里达州卡那维尔角的2月23日,2011年.