Satellite crash 'worse than missile blast'
来源：未知 作者：谭坨碰 时间：2019-03-09 06:18:03
Read our related editorial: Even space is now brimming with trash SPACE weapons are destructive enough, but out-of-control satellites can be worse. So says a space scientist who has calculated that last week’s collision between a US Iridium satellite and the defunct Russian craft Cosmos 2251 delivered far more destructive energy than China’s anti-satellite missile test in 2007. In 2003 Hugh Lewis at the University of Southampton in the UK calculated the debris field created in a hypothetical collision of an Iridium satellite with a 1-kilogram object (Acta Astronautica, vol 54,