Launching space vehicles from its top would be much cheaper.

而从天梯顶部发射太空飞行器造价会更为低廉。

Then they see space vehicles and a rock collected from the moon.

然后，他们观看太空交通工具以及从月球上收集的岩石。

A module is part of a space vehicle that can work independently.

该太空舱可以独立运作属于飞船的一部分。

This marks the first time that commercially developed space vehicles have carried humans into orbit.

这标志着商业开发的太空飞行器首次将人类送往太空轨道。

The mission was to land a space vehicle, called a rover, on the moon's surface.

这次任务是让一辆名为月球车的太空飞行器在月球表面着陆。

A Russian teacher of that time, Konstantin Tsiolkovsky, decided that a rocket engine could provide power for a space vehicle.

当时，俄罗斯一位老师——康斯坦丁·齐奥尔科夫斯基认为，火箭发动机可以为太空飞行器提供动力。

One idea is to simply capture an asteroid with a space vehicle and tow it into a safe orbit above Earth.

一种想法是简单地用太空飞行器捕获小行星，并将其拖到地球上方的安全轨道上。

Such engines are used for long-distance missiles and space vehicles.

这种发动机用于远程导弹和太空飞行器。

The foursome will spend their time conducting scientific experiments and looking out of the biggest window ever fitted to a space vehicle.

这四人将在太空进行科学实验，并通过有史以来安装在太空飞行器上的最大窗户观赏太空。

It's the most versatile space vehicle that has ever been built.

它是有史以来最通用的太空飞行器。

A) Recycle used space vehicles before they turn into debris.

A) 在用过的航天器变成碎片之前对其进行回收。

While making significant contributions to space science, CubeSats may pose hazards to other space vehicles.

8. 在对空间科学做出重大贡献的同时，立方体卫星可能对其他空间飞行器造成危害。

NASA continues to work on mostly " unmanned" programs. These are space vehicles that don't have any people inside them.

NASA 继续致力于主要是“无人”计划。这些是里面没有任何人的太空飞行器。

SpaceX officials have described the two-part rocket ship – which stands 120 meters high – as the largest and most powerful space vehicle ever built.

太空探索技术公司官员称，这枚火箭由两部分组成，高120米，是有史以来建造的最大、最强的空间飞行器。

Later that month, Virgin Galactic’s experimental space vehicle SpaceShip Two broke up in the middle of a test flight, killing one of the two pilots.

当月晚些时候，维珍银河的实验太空飞船SpaceShip2在测试航行中爆炸，导致两名宇航员死亡。

What is a space vehicle launching entity required to do according to the current U. S. Government Orbital Debris Mitigation Standard Practices?

4. 根据现行的美国政府轨道碎片减缓标准做法，航天器发射实体需要做什么？

A major goal of SpaceX is to create a space vehicle that can take people, equipment and other necessary resources to Mars and to build a transportation infrastructure that will allow humans to become a multi-planetary species.

该公司的一个主要目标是制造一种能把人、设备和其他必要资源带到火星的太空飞行器，并建造一个交通基础设施，使人类成为一个多行星物种。