When we finish, ISS will be a premier, world-class laboratory in low Earth orbit.
当我们完成时，国际空间站将成为近地轨道上一流的世界级实验室。
But low-Earth orbit isn't a perfect vacuum.
但近地球轨道不是一个完美的的真空。
Access to Earth orbit is expensive, and wildly wasteful.
进入地球轨道是昂贵的，也是疯狂的浪费。
The space telescope was launched into Earth orbit in March 2009.
太空望远镜在2009年3月发射进入地球轨道。
Artwork showing space debris in low and geostationary Earth orbit.
这张作品显示了近地轨道和地球同步轨道上的太空碎片。
In its low Earth orbit, PAMELA regularly plows through this region.
PAMELA卫星在绕地球轨道的低空处定期地穿越该区域。
It would also have enough thrust to deliver a satellite to low-Earth orbit.
还拥有足够的推力将卫星送入低地球轨道。
The rocket successfully lifted a reconnaissance satellite to low Earth orbit.
火箭成功的将一枚勘测卫星送入地球低轨道。
If we take the shuttle as an example of a near-Earth orbit, so we have the shuttle.
我们以航天飞机为例，在近地球轨道上，有一个航天飞机。
PASADENA, Calif. - Send a robot into space. Grab an asteroid. Bring it back to Earth orbit.
加州帕萨迪纳市——将机器人发射入太空，抓取一个小行星，然后把它拖回地球轨道。
NASA has not flown astronauts beyond low-Earth orbit since the Apollo program, in the 1970s.
美国航空航天局自20世纪70年代的“阿波罗计划”以来，就没有进行过超出地球低轨道的载人航空活动。
What the shuttles did provide, however, was a way for America to carry people into low-earth orbit.
然而，航天飞机为美国提供了一种将人带入近地轨道的方法。
Earth orbit is and will remain a valuable place, as the swarms of satellites that circle the planet attest.
地球轨道是并一直是难得的地点，成群的环绕卫星就是例证。
This altered the propagation of GPS signals and slowed the rate of decay of space debris in low Earth orbit.
这样就改变了GPS信号的传播，减小了地球底层轨道上空间碎块的衰减速度。
The satellite Markus USES - ICESat - was retired in early 2010 after 7 years collecting data in Earth orbit.
马库斯所用的ICESat号卫星在沿地球轨道飞行，收集了7年的数据，已于2010年初退役。
Since the crew of Apollo 17 returned from the moon in December 1972, no human has ever left low-Earth orbit.
自从1972年12月阿波罗17号的机组成员从月球返回地球以来，再没有人飞出过近地轨道。
NASA should stop travelling to the International Space Station in particular and to “low Earth orbit” in general.
国家宇航局尤其要停止飞往国际太空站，一般的“近地轨道”飞行也要停止。
NASA isn’t just tasked with reinventing its hardware; to get beyond low-Earth orbit, it must reinvent its astronauts.
国家宇航局不仅面临重新改造其硬件设施和到达近地轨道之外的任务，它还必须重新改造宇航员。
NASA Administrator Charles Bolden says the budget "enables NASA to set its sights on destinations beyond Earth orbit."
图释：美国太空总署行政长官查尔斯·博登称这次预算将使美国太空总署能够将目光投向地球轨道外的目标。
In the meantime, it could replace chemical rockets for pushing satellites from low Earth orbit to geostationary orbit.
同时，它可以取代化学燃料火箭来帮助卫星从近地轨道变轨至静止轨道。
One calls for launching microsatellites into low Earth orbit in constellations that would provide continuous target coverage.
其中之一是将小卫星发射到低地球轨道构成卫星星座，以便能提供对目标的持续覆盖。
Space Fence will provide continuous, net-centric space situational awareness by detecting smaller objects in low and medium earth orbit.
太空护栏将通过探测中低地球轨道的小型目标提供持续的网络中心态势感知。
In theory, the outsourcing of low earth orbit will make available resources for NASA to focus on farther-reaching manned exploration.
理论上，近地轨道外包将使美国宇航局有更多资源来专注于远程有人探索。
But then again, most sailboats do have a motor for tooling around in the harbor, which is how Dr. Friedman describes being in Earth orbit.
但是，反过来说，大多数帆船都配有马达，以便在港口内行驶，弗里德曼博士这样描述在地球轨道的情况。
So what we are doing is relying on commercial capability to get us access to low Earth orbit, to get us to the International Space Station.
所以我们所要做的就是依靠商业功能让我们进入低地球轨道，让我们进入国际空间站。
The communications vessels collided at more than 3,000m per second - the first major smash between two operational satellites in Earth orbit.
当时，在地球轨道上以时速3000米每秒的高速运行的两颗发生了对撞。
The communications vessels collided at more than 3,000m per second - the first major smash between two operational satellites in Earth orbit.
当时，在地球轨道上以时速3000米每秒的高速运行的两颗发生了对撞。
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