ScienceCasts: Планетарная защита

Координационное управление планетарной обороны НАСА защищает Землю от астероидов и других угроз из дальнего космоса. Планетарная защита НАСА: http://www.nasa.gov/planetarydefense Для получения дополнительной информации заходи на: http://science.nasa.gov/ Жми сюда, тут больше видеороликов: https://alugha.com/NASA

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