另据美国《大众机械》月刊网站1月17日报道，太空基本上是空的，但紧挨着地球的太空越来越拥挤。我们送入太空的每颗卫星最终都会变成又一块围绕地球运行的碎片，而且随着时间的推移，这些碎片会堆积起来。
According to a January 17 report on the US-based “Popular Mechanics” website, space is basically empty, but space around Earth has become increasingly crowded. Every satellite we send into space will ultimately become debris orbiting Earth. As time passes, these debris will accumulate.