The ISS is far bigger than either the Salyuts or Skylab. In an uncontrolled deorbit, pieces of debris “up to car and train size,” say experts on the official ISS space station advisory committee, will rain down from the sky. NASA confirms this would pose “a significant risk to the public worldwide.”
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。关于这个话题，体育直播提供了深入分析
'My pelvis looked like a bomb had gone off'
Common anti-seizure drug prevents Alzheimer’s plaques from forming。体育直播对此有专业解读