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Planetary defense / Spaceflight / Near-Earth object / Solar System / Asteroid / Comet / Aten asteroid / Impact event / Spaceguard / Astronomy / Planetary science / Space


SHIELD–A Phase I Report SDO[removed]SHIELD—A Comprehensive Earth Protection System
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Document Date: 2012-10-10 14:59:46

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File Size: 696,50 KB

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