That is to say, they wouldn't be able to walk on the Moon or work outside the International Space Station.

也就是说，他们不能在月球上行走，也不能在国际空间站外工作。

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But while the view out of Tranquility was primarily designed to give astronauts a way to see the outside of the station itself, it also provides a stunning panoramic view of Earth and space.

“宁静”号节点舱的观察台首先是设计给宇航员，用来观察空间站自身外表状态的，但也提供了一个令人惊叹的观察地球和太空的无障碍视野。

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The platform will conduct experiments designed to work outside the protective confines of the space station.

平台将用于进行空间站保护范围外进行的各项实验。

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Since May 2011, the detector -- which is mounted outside the space station -- has been sifting through matter, antimatter and other particles as it circles the Earth, with the data sent to hundreds of scientists on the ground for analysis.

CNN: Space station detector gives first clues to 'dark matter'

The problem is that the outside hatch on the space station points down and it points down 200 miles to the Earth.

BBC: 'Never cut your hair in space'

On Saturday afternoon, NASA astronauts Chris Cassidy and Tom Marshburn successfully completed a spacewalk to repair a leaky component on the outside of the International Space Station.

FORBES: Astronauts Perform Emergency Spacewalk To Fix Ammonia Leak