Esa and other nations are already discussing a next-generation space station that would operate as a base from which to explore space beyond low-Earth orbit;

欧洲航天局和其他国家都已经开始在讨论下一代空间站，以此作为一个基地，去探索超越近地球轨道之外的空间；

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An optimal trajectory generation strategy based on way-points is presented to solve the fixed-time state transition for spacecraft relative motion in a circular orbit.

针对圆(近圆)轨道航天器相对运动的固定时间状态转移问题，提出了一种基于导航点的多脉冲优化轨迹生成策略。

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Air-breathing hypersonic vehicle(AHV) has been the next generation single stage to orbit vehicle and hypersonic cruise vehicle.

吸气式高超声速飞行器是下一代单级入轨和高超声速巡航研究的重点飞行器。

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The MUOS constellation is eventually expected to include four next-generation communication satellites and an in-orbit spare.

WSJ: U.S. to Trim Commercial-Satellite Use

Virgina-based Iridium is almost halfway through a multi-year plan to replace its low-earth orbit network of communication satellites with a powerful new generation.

FORBES: Iridium Preps Its NEXT Generation Of Satellites

That is, until US satellite company Iridium decided to sell real estate on a portion of its next-generation global satellites, which are set to go into orbit starting in 2015 and be fully operational by 2018.

BBC: The key to preventing lost planes