Endogenous production, exogenous delivery and impact-shock synthesis of organic molecules: An inventory for the origins of life

Christopher Chyba, Carl Sagan

Research output: Contribution to journalReview articlepeer-review

839 Scopus citations

Abstract

Sources of organic molecules on the early Earth divide into three categories: delivery by extraterrestrial objects; organic synthesis driven by impact shocks; and organic synthesis by other energy sources (such as ultraviolet light or electrical discharges). Estimates of these sources for plausible end-member oxidation states of the early terrestrial atmosphere suggest that the heavy bombardment before 3.5 Gyr ago either produced or delivered quantities of organics comparable to those produced by other energy sources.

Original languageEnglish (US)
Pages (from-to)125-132
Number of pages8
JournalNature
Volume355
Issue number6356
DOIs
StatePublished - 1992
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General

Fingerprint Dive into the research topics of 'Endogenous production, exogenous delivery and impact-shock synthesis of organic molecules: An inventory for the origins of life'. Together they form a unique fingerprint.

Cite this