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Directed Panspermia Using Interstellar Comets.

Christopher P McKay1, Paul C W Davies2, Simon P Worden3

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Summary
This summary is machine-generated.

Habitable planets may be common, but life rare. This study proposes using interstellar comets to seed lifeless planets with life, exploring panspermia and ethical challenges.

Keywords:
Extraterrestrial civilizationInterstellar objectsPanspermia

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Area of Science:

  • Astrobiology
  • Planetary Science
  • Exoplanet Research

Background:

  • Habitable exoplanets may be common, yet life's prevalence remains unknown.
  • Future telescope advancements might reveal a universe rich in planets but devoid of life.
  • This scarcity could motivate proactive measures to introduce life beyond Earth.

Purpose of the Study:

  • To propose a novel mechanism for seeding lifeless planets with terrestrial or synthetic life.
  • To explore the feasibility of using interstellar comets for interplanetary microbial transport.
  • To consider the implications of panspermia, both natural and deliberate, for understanding life's origins.

Main Methods:

  • Conceptualizing interstellar comets as natural delivery vehicles for microbial payloads.
  • Investigating the potential for cometary dust trails to disseminate life across planetary systems.
  • Analyzing the scientific and ethical considerations of directed panspermia.

Main Results:

  • Interstellar comets offer a cost-effective method for transporting microbial life to exoplanets.
  • Cometary dust trails could serve as a natural mechanism for spreading life.
  • The hypothesis of life's deliberate seeding could be tested by searching for specific biochemical signatures.

Conclusions:

  • Seeding lifeless planets is a potential future endeavor if life proves rare.
  • Interstellar comets present a viable, low-cost mechanism for interplanetary life transfer.
  • Further research is required to address the significant ethical and technological challenges involved.