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。

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This is a major step in certifying transportation systems that can meet America's goal of transporting our astronauts to and from the space station.

EDMango说，他是NASA的CCP经理，“这是一个主要步骤，以证明运输系统（是否）能满足美国的目标（把）我们的宇航员运送到空间站的。

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Advances made by these American companies during the first contract phase known as the certification products contracts (CPC) will begin the process of ensuring integrated crew transportation systems will meet agency safety requirements and standards to launch American astronauts to the International Space Station from the United States, ending the agency's reliance on Russia for these transportation services.

ENGADGET: NASA awards Boeing, SpaceX and Sierra Nevada $30 million in contracts

On Wednesday, top Russian space officials will meet to decide whether the new station should be launched into an orbit closer to Mir, allowing astronauts to salvage some of its equipment for the new station.

CNN: Russia reluctant to let Mir die