A so-called Earth Departure stage and Altair lunar lander would sit atop the core stage and be launched into orbit to meet Orion spacecraft carrying moon-bound astronauts.
所谓的地球分离级和牵牛星月球着陆器在核心级之上，被发射进入轨道后，与载有登月宇航员的猎户座太空船会合。
This NASA unmanned spacecraft launched Jan. 7, 1998 on a mission to orbit the moon in search of signs of water ice and other minerals in permanently shaded craters at the lunar poles.
这艘NASA无人驾驶飞船于1998年1月7日发射，使命是围绕月球飞行并在月球两极永远在阴影中的火山口里寻找水冰以及其它物质存在的迹象。
But the satellites will arrive with less relative speed than spacecraft making the trip in three days, which means less fuel will be needed to brake and drop into lunar orbit.
但是相比太空飞船，卫星着陆时需要相对小的速度，这将需要三天的时间，意味着消耗更少的燃料进入绕月轨道。
India put the Chandrayaan 1 spacecraft into lunar orbit in 2008, a mission with a NASA payload that helped confirm the presence of water on the moon.
印度于2008年将“月球飞船1号”太空飞行器送入了月球轨道，目标是用其搭载的NASA(美国国家航空和航天管理局)探测仪器确认月球上是否有水的存在。
On Oct. 7, 2010, NASA's Solar Dynamics Observatory, or SDO, observed its first lunar transit when the new moon passed directly between the spacecraft (in its geosynchronous orbit) and the sun.
2010年10月7日，当一轮新月从太空飞船（与地球同步轨道）和太阳之间直接经过时，美国国家航空航天局太阳动力学观测台观测到了圆月的运转。
NASA's Gravity Recovery and Interior Laboratory, or GRAIL, mission spacecraft will orbit the moon before landing on the lunar surface.
美国航天局的重力恢复与内部实验室计划，又称“圣杯”号月球探测器将首先环绕月球轨道飞行，然后在月球表面着陆。
Interplanetary spacecraft may require more radiation shielding than the low-orbit and lunar craft that humans have travelled in so far.
行星际飞船也许需要比迄今人类已经乘坐过的低轨道和月球登陆舱更强的辐射防护。
The spacecraft USES a bipropellant integrated propulsion system to reach lunar orbit as well as orbit and attitude maintenance while orbiting the Moon.
该航太器采用一个整体的二元组推进系统进入月球轨道和维持轨道高度及状态。
The antenna employs a dual gimbal mechanism to track the earth station when the spacecraft is in lunar orbit.
该天线采用了双万向接头结构，以便航太器在月球轨道跟踪地球站基站。
The antenna employs a dual gimbal mechanism to track the earth station when the spacecraft is in lunar orbit.
该天线采用了双万向接头结构，以便航太器在月球轨道跟踪地球站基站。
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