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

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

Earth.com general

Key Points:

  • 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 t

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