根据今年九月的一项研究显示，宇航员在呆着太空手套工作或者训练后，手指甲很容易掉落，特别是手比较大的那波人。
Astronauts with wider hands are more likely to have their fingernails fall off after working or training in space suit gloves, according to a study released in September.
太空岩石群 ：陨石碎片一般会落入海洋，有时也会掉落沙漠，如同小行星2008TC3的残骸。
School of Rock: Fragments that manage to survive often fall into the ocean. Sometimes debris drops to the desert, as it did with asteroid 2008 TC3.
宇航员进行太空行走时偶尔掉落的工具。
除此之外，在五十四年的太空探索历史中，还没有人被卫星掉落的残骸击中或击伤过，就算算上卫星雨和火箭推进器也是如此。
And besides, in the 54-year history of the space age, no one has ever been hit by falling debris, despite a steady rain of satellites and rocket bodies.
在技术人员们将上周五掉落的一个主要的分离螺帽重新安装好之后，NASA(美国航空航天局)的发现号航天飞机正准备最后一次飞向太空。
Nasa's shuttle Discovery is getting ready to blast off into space one last time, after technicians reattached a main separation nut that fell off on Friday.
在技术人员们将上周五掉落的一个主要的分离螺帽重新安装好之后，NASA(美国航空航天局)的发现号航天飞机正准备最后一次飞向太空。
Nasa's shuttle Discovery is getting ready to blast off into space one last time, after technicians reattached a main separation nut that fell off on Friday.
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