DART 行星防御测试的效果比预期的好 25 倍 Posted on 2022-10-13 已采取措施保护地球免受太空岩石的伤害 原文： https://www.economist.com/science-and-technology/2022/10/12/the-dart-planetary-defence-test-worked-25-times-better-than-hoped