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What did a NASA scientist just say about city-killing asteroids and the alleged damage they could do?

A NASA scientist has warned that thousands of city-killing asteroids could strike Earth, and there’s currently no defense humanity could use to stop them. Kelly Fast, a planetary defense officer at ...
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Earth has no way to stop 'city killer' asteroids, NASA chief warns

(NewsNation) — A NASA scientist is warning that Earth currently has no reliable way to stop thousands of so-called “city-killing” asteroids that could one day strike the planet — a reality raising ...