Global ETD Search
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Showing 1 to 1 of 1 for “"asteroids, comets, hazardous objects, near earth asteroids, Planetary Defense"”.
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Size-Dependent Earth Impactor Warning Times And Corresponding Campaign Mission Recommendations
<p>NASA seeks to reliably detect potential Earth Impactors (EI) in time to defend the planet by deflecting them. Congress has given an unfunded mandate to NASA to lead Spaceguard, a coalition of worldwide observatories and scientists who find, track, and determine impact probabilities for potential …