Pre-biotic organic matter from comets and asteroids

@article{Anders1989PrebioticOM,
  title={Pre-biotic organic matter from comets and asteroids},
  author={Edward Anders},
  journal={Nature},
  year={1989},
  volume={342},
  pages={255-257}
}
  • E. Anders
  • Published 16 November 1989
  • Geology
  • Nature
SEVERAL authors1–3 have suggested that comets or carbonaceous asteroids contributed large amounts of organic matter to the primitive Earth, and thus possibly played a vital role in the origin of life. But organic matter cannot survive the extremely high temperatures (> 104 K) reached on impact, which atomize the projectile and break all chemical bonds. Only fragments small enough to be gently decelerated by the atmosphere—principally meteors of 10−12–10−6 g—can deliver their organic matter… 

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Carbonaceous Micrometeorites and the Origin of Life

  • M. Maurette
  • Geology
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  • 2004
TLDR
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  • D. Whittet
  • Geology
    Origins of life and evolution of the biosphere
  • 2004
TLDR
I review the relative importance of internal and external sources of prebiotic molecules on Earth at the time of life's origin μ3.7Gyr ago and concludes that if the early atmosphere was non-reducing and CO2-dominated, external delivery might have been the dominant source.

Comets and the formation of biochemical compounds on the primitive Earth – A review

TLDR
It is argued that cometary collisions with the primitive Earth represented an important source of both free-energy and volatiles, and may have created transient, gaseous environments in which prebiotic synthesis may have taken place.

Extraterrestrial Flux of Potentially Prebiotic C, N, and P to the Early Earth

TLDR
This work quantifies the sources of potentially prebiotic, extraterrestrial C, N, and P and correlates these fluxes with a comparison to total Ir fluxes, and estimates the effect of atmosphere on the survival of material.

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Meteorites can have played a role in the delivery of the building blocks of life to Earth only if organic compounds are able to survive the high pressures and temperatures of an impact event.
...

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