세상의 구조에 관심이 많습니다. 사람과 돈, 그리고 선택이 만들어내는 장면을 기록합니다. 동아닷컴 팩트라인팀.
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In the vacuum of space, the amount of debris—spent rocket stages, splintered satellites, micrometeoroids—numbers in the millions, all zooming about, often at 17,000 mph speeds. They’re also constantly hitting each other in a tsuris of exponential littering. Most of these pieces are tiny, and many are not anywhere near the altitude of the ISS. But the area isn’t completely clean.，详情可参考WPS下载最新地址
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