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NASA warns that thousands of dangerous asteroids remain undetected, and Earth lacks a ready defense system despite progress.
NASA warns that around 15,000 medium-sized asteroids, each at least 140 meters wide and capable of devastating cities, remain undetected, posing a significant threat despite progress in planetary defense.
While the 2022 DART mission proved asteroid deflection is possible, no ready-to-deploy system exists for an actual imminent threat.
Current detection efforts have only identified about 40% of these objects, with many hidden by darkness or sun glare.
NASA plans to launch the Near-Earth Object Surveyor space telescope in 2027 to improve detection by sensing heat, but experts stress that funding and preparedness gaps leave Earth vulnerable to sudden impacts.
La NASA advierte que miles de asteroides peligrosos permanecen sin ser detectados, y la Tierra carece de un sistema de defensa listo a pesar de los avances.