Science Now: Where Did We Come From (NOVA) Worksheet
Science Now: Where Did We Come From (NOVA): In this episode of NOVA scienceNOW, journey back in time to the birth of our solar system to examine whether the key to our planets existence might have been the explosive shockwave of an ancient supernova. Meet a chemist who has yielded a new... (more details for Science Now: Where Did We Come From (NOVA))
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