ScienceCast : la défense Planétaire

Le Bureau de coordination pour la défense planétaire de la NASA travaille à protéger la Terre contre les astéroïdes et autres dangers provenant de l'espace profond. Rendez-vous sur http://science.nasa.gov/ pour en savoir plus. Défense Planétaire de la NASA : http://www.nasa.gov/planetarydefense Traduction et doublage en français : alugha Cliquez ici pour voir plus de vidéos : https://alugha.com/NASA

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