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解决太空垃圾问题的决策成本应该比气候变化问题便宜些,但这个比较可不怎么令人振奋。我想电影《地心引力》的情节应该不会给人们带来太多的惊讶,就是由桑德拉.布洛克和乔治.克鲁尼两位巨星领衔,在电影中,他们的宇宙空间站遭到了太空碎片撞击。这并不是什么离奇的幻想:早在2009年,就有两颗无人卫星在没有得到预先警告的情况下,在西伯利亚上空约800公里处发生了撞击。我们不用担忧这些太空碎片会落到脑袋上,但这些碎片停留在太空里,怎
The decision-making costs of addressing the issue of space junk should be cheaper than the issue of climate change, but this comparison can be less exciting. I think the episode “gravity” of the film should not bring much surprise to people, led by Sandra Bullock and George Clooney two stars in the movie, their space station was Space debris hit. This is not a bizarre illusion: as early as 2009, two unmanned satellites collided about 800 km above Siberia without warning. We do not have to worry about these space debris falling to the head, but these fragments stay in space, how