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Life as a planetary phenomenon.

T Owen1

  • 1Department of Earth and Space Sciences, State University of New York, Stony Brook 11794, USA.

Origins of Life and Evolution of the Biosphere : the Journal of the International Society for the Study of the Origin of Life
|January 1, 1985
PubMed
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Planetary exploration reveals why Earth uniquely supports abundant life. Other planets like Mars and Titan may offer insights into the early conditions necessary for life's origin and evolution.

Area of Science:

  • Planetary Science
  • Astrobiology
  • Origin of Life Studies

Background:

  • Recent space missions have provided extensive data on planets within our solar system.
  • Understanding planetary conditions is key to explaining the unique prevalence of life on Earth.

Purpose of the Study:

  • To develop a comprehensive rationale for Earth's abundant life.
  • To investigate the potential for life's origins on other celestial bodies.

Main Methods:

  • Comparative analysis of planetary data from U.S.A. and U.S.S.R. spacecraft.
  • Assessment of atmospheric and surface conditions on Mars, Titan, Venus, and Jupiter.

Main Results:

  • Mars's early history might hold clues to Earth's atmospheric development, with the origin of life not ruled out.

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  • Titan presents a model for primitive conditions and pre-biotic chemical reactions.
  • Venus and Jupiter highlight the critical roles of planetary size and solar distance in chemical evolution.

    • Conclusions:

    • Planetary characteristics significantly influence the potential for life.
    • Comparative planetology is crucial for understanding the conditions required for abiogenesis.