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The Venus Life Equation.

Noam R Izenberg1, Diana M Gentry2, David J Smith2

  • 1Earth and Environmental Sciences Department, Johns Hopkins University Applied Physics Laboratory (JHUAPL), Laurel, Maryland, USA.

Astrobiology
|January 29, 2021
PubMed
Summary
This summary is machine-generated.

Ancient Venus may have harbored life, similar to early Earth. A new Venus Life Equation (VLE) suggests life could persist in clouds, warranting further astrobiological exploration.

Keywords:
AstrobiologyCloudsEvolutionExtremophilesHabitabilityVenus

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Area of Science:

  • Astrobiology
  • Planetary Science
  • Origin of Life Studies

Background:

  • Early Venus and Earth may have shared key conditions for life, including liquid water oceans and favorable chemical environments.
  • The Venusian cloud layer might serve as a potential refuge for life that originated on a more habitable ancient surface.

Purpose of the Study:

  • To introduce the Venus Life Equation (VLE) for calculating the probability of extant life on Venus.
  • To evaluate the factors of life's Origination, Robustness, and Continuity (ORC) using current Earth and Venus data.

Main Methods:

  • Developed the Venus Life Equation (VLE) based on theory and evidence.
  • Assessed the probability of life's origination on Venus by comparing it to Earth's conditions.
  • Evaluated the robustness and continuity factors for Venusian life based on environmental data.

Main Results:

  • The probability of life's origination on Venus appears comparable to that of early Earth.
  • The factors for life's robustness and continuity on Venus are likely non-zero.
  • The VLE highlights critical knowledge gaps regarding Venusian habitability.

Conclusions:

  • Extant life on Venus is a plausible hypothesis, potentially existing in the planet's cloud layer.
  • The VLE provides a framework for assessing astrobiological potential and guiding future Venus exploration missions.
  • Further observational missions are crucial for understanding Venus's potential for life.