Over 15,000 'city-killing' asteroids are orbiting Earth undetected

Technology

Over 15,000 'City-Killing' Asteroids Are Orbiting Earth Undetected

By Earth.com

NASA estimates that over 15,000 asteroids, each large enough to destroy a city, remain undetected, leaving Earth virtually defenseless. That gap means a single late discovery could force governments to confront a regional catastrophe with little time ...Read more

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