city killer asteroid

City-Killer Asteroids: NASA’s Growing Concern

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NASA is increasingly concerned about city-killer asteroids—space rocks large enough to devastate metropolitan areas. While rare, limited detection windows and tracking challenges make early warning and planetary defense strategies critically important.

The Hidden Threat Orbiting Near Earth While humanity has made enormous strides in space exploration, NASA scientists are now warning that thousands of undetected asteroids capable of destroying entire cities may be quietly orbiting near Earth. Unlike the massive “planet killers” that could cause global extinction — which scientists say are largely tracked — the … Read more