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What is Astrobiology? As defined in the NASA Strategic Plan, Astrobiology is the study of the living universe, providing a scientific foundation for the multidisciplinary investigation of the origin and distribution of life, including the role of physical forces, planetary atmospheres, and ecosystem interactions in the evolution of living systems. What We Know about the Living Universe
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The "habitable zone"
for terrestrial life is much broader than previously thought. Examples
of life at extreme
conditions include:
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