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Date: 2013-07-15 18:35:04Biology Extremophile Planetary habitability Microorganism Extraterrestrial life Nature Organism Nutrient Soil Astrobiology Microbiology Spaceflight | National Aeronautics and Space Administration Search for Life on Other Worlds: What is Life and What Does it Need to Live? DESCRIPTIONAdd to Reading ListSource URL: www.nasa.govDownload Document from Source WebsiteFile Size: 77,74 KBShare Document on Facebook |