LIBROS DEL AUTOR: james s knox

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  • Planetary Defense
    James S. Knox
    The threat to Earth due to the impact of an Earth-crossing asteroid or comet is not new, but scientitsts have only recently recognized it as a continuing threat. The past ten years reveal several frightening near misses, and 'hits' by bodies too small to survive long enough in the atmosphere to cause damage. The hazard created when an object strikes Earth varies greatly, from a...
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