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p. 11. What is astrobiology?locked

  • David C. Catling

Abstract

Astrobiology is defined as a branch of science concerned with the study of the origin and evolution of life on Earth and the possible variety of life elsewhere. Astrobiologists agree that we should have a firm understanding of how life evolved on Earth in order to ponder the existence of life in outer space. This chapter explains that the study of astrobiology has emerged to fill the gaps in human knowledge that will allow us to answer fundamental questions about biology, for example: How did life on Earth get started? Which special properties of the Earth and the Solar System make our planet habitable?

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