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[ noun ] a metric unit of length equal to 1000 meters (or 0.621371 miles)

Used in print

(J. F. Vedder, "Micrometeorites", in Francis S. J...)

If such is the case , the particles within a distance of about * * f km of the Earth will have , relative to the Earth , a kinetic_energy less than their potential_energy and they will be captured into orbits about the Earth .

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