之前只有欧洲航天局和美国航天局发送过探测器到那里。
Only the European Space Agency and the US have previously sent probes there.
新闻发布会将在华盛顿东街300号的美国航天航空局总部礼堂举行。
The news conference will be held at the NASA Headquarters auditorium at 300 E St. SW, in Washington.
美国航天局/喷气推进实验室/亚利桑那大学
本文介绍美国航天气象保障工作简况。
The meteorological support of space activities in the United States is briefed in this paper.
但是美国航天计划二十五年来做的正是如此。
But for twenty-five years the United States space program has been doing just that.
美国航天飞机最近一次的发射被安排在7月初。
The next and last launch of a US space shuttle is scheduled for early July.
美国航天局会在下周早些时候告诉公众更多细节。
NASA expects to give the public more detailed information early next week.
没有造成危害，但美国航天局不愿冒险尝试发射。
No harm was done, but NASA did not want to take any chances.
美国航天局一直在密切关注一个重达6吨的卫星。
对于美国航天航空局来说，今年是特别艰难的一年。
我们给美国航天局做的很多设计最后都非常的工程化。
A lot of what we come up with at NASA ends up being very engineered.
美国航天局今天证实，月球上有水，而且是大量的水。
There is water on the moon, NASA confirmed today, and lots of it.
他们还设法通过其他在火星上的美国航天机器检测它。
They are also trying to detect it through other U. s. crafts at Mars.
2011年，美国航天航空局可能会发射最后一架航天飞机。
In 2011, the US space agency is likely to launch its final space shuttle flight.
美国航天局说，在地球上稀疏的白色卷云是由冰晶所组成的。
On Earth, NASA says, white wispy cirrus clouds are made of ice crystals.
美国航天局计划在2020年宇航员重返月球时运用这项技术。
The us space agency plans to use the technology when astronauts return to the moon around 2020.
他说，私营部门可望承担美国航天局耗资不菲的那部分空间任务。
Stern says the private sector is promising to conduct space missions for a fraction of what they have traditionally cost NASA.
但美国航天航空局希望这个望远镜格外敏感的探测器会探测到与地球更像的世界。
But the US space agency (Nasa) hopes that the telescope's extraordinarily sensitive detectors will lead it to worlds ever more like our own.
一家美国航天公司称，一种强大的新型火箭将在明年年底准备进行试射。
An American space company says a powerful new rocket should be ready for a test launch by the end of next year.
星期二，美国航天局公布了显示美国航天局此前登月任务痕迹的高清照片。
Tuesday, NASA released high resolution photographs showing the remnants of the space agency's previous lunar visits.
上个月，美国参议院通过了美国航天局授权法案，这是一个经过妥协的版本。
Last month, the Senate passed its version of the NASA authorization bill, which is more of a compromise.
美国航天局报告说，从来没有世界各地天空中同时出现两个月亮这样的事情。
NASA has reported that there is no such thing as two moons showing in the skies over the world.
本周二早上，美国航天航空局发射的“信使”号探测器对水星表面进行了拍摄。
On Tuesday morning, NASA's Mercury Messenger took this photograph of the surface of Mercury.
哥伦比亚号航空航天飞机是美国航天局轨道船队第一个有价值的空间航天飞机。
The space shuttle Columbia was the first space worthy shuttle in NASA 's orbital fleet.
要完成建设国际空间站的工作，需要美国航天飞机和俄罗斯火箭进行超过80次太空飞行。
More than 80 flights of U.S. space shuttles and Russian rockets will be necessary to complete the International Space Station.
从美国航天局获悉，约20颗美国卫星的运行轨道以后可能靠近碎片云的运行轨道。
About 20 NASA satellites are in orbits that would take them close to the debris cloud, according to the space agency.
文中对德国、法国、印度和美国航天光学遥感器研制情况的一个侧面进行了简述。
The paper introduces the development of space remote sensors in Germany, France, India and America.
文中对德国、法国、印度和美国航天光学遥感器研制情况的一个侧面进行了简述。
The paper introduces the development of space remote sensors in Germany, France, India and America.
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