行星防御：军用和民用卫星如何观察火球，以帮助保护地球免受太空岩石的侵害

卫星正在观看火球在地球大气层中燃烧，加强行星防御技术，并帮助科学家更多地了解空间碎片的影响。

原文标题：Planetary defense: How military and civil satellites are watching fireballs to help keep Earth safe from space rocks

信源：Space.com ｜ 阅读原文

Satellites are watching fireballs blaze through Earth's atmosphere, strengthening planetary defense knowhow and helping scientists learn more about space debris impacts.

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