Oct. 8 (UPI) --International space agencies say an asteroid zipped by Earth closer than a large number of satellites currently in orbit, but was not detected until hours later. The European Space ...
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Thousands of 'city-killer' asteroids lurk as NASA struggles to find them
NASA has found fewer than a third of the near-Earth asteroids large enough to destroy a city, and the agency’s best tool for closing that gap will not reach space until at least 2027. The shortfall ...
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