With delays after the 2003 Columbia disaster and the probable 2010 retirement of the shuttles, no flights were available to deliver the device to the space station.
在那以后的整个航天飞机时代里,人类再没有到达过离地球600公里以外的地方。
Since then, during the space shuttle era, humans haven't ventured more than 400 miles from Earth.
我认为作为机器的航天飞机是人类有史以来建造的最令人难以置信的机器。
I think the space shuttle is the single most incredible machine humanity has ever built.".
加上为其提供服务的航天飞机(尽管它们现在已经退役了),它的成本高达12位数。
Its cost, plus that of the Shuttles whose main purpose was to service it(though they have now been decommissioned), ran well into twelve figures.
此后,凯瑟琳还参与了美国的航天飞机项目和地球资源卫星项目。
Later in her career, she worked on the Space Shuttle program and the Earth Resources Satellite.
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