Ponnamperuma Cosmochemistry and the Origin of Life

Proceedings of the NATO Advanced Study Institute held at Maratea, Italy, June 1–12, 1981
1983
ISBN: 978-94-009-7072-4
Verlag: Springer Netherland
Format: PDF
Kopierschutz: 1 - PDF Watermark

E-Book, Englisch, Band 101, 386 Seiten, eBook

Reihe: Nato Science Series C:

For the first time in human history, developments in many branches of science provide us with an opportunity of formula ting a comprehensive picture of the universe from its beginning to the present time. It is an awesome reflection that the carbon in our bodies is the very carbon which was generated during the birth of a star. There is a perceptible continuum through the billions of years which can be revealed by the study of chemistry. Studies in nucleosynthesis have related the origin of the elements to the life history of the stars. The chemical elements we find on earth, HYdrogen, Carbon, Oxygen, and Nitrogen, were created in astronomical processes that took place in the past, and these elements are not spread throughout space in the form of stars and galaxies. Radioastronomers have discovered a vast array of organic molecules in the interstellar medium which have a bearing on prebiological chemical processes. Many of the molecules found so far contain the four elements, C, N, 0, H. Except for the chem ically unreactive He, these four elements are the most abundant in the galaxy. The origin of polyatomic interstellar molecules is an unresolved problem. While we can explain the formation of some diatomic molecules as due to two atom collisions, it is much more difficult to form polyatomic molecules by collisions between diatomic molecules and atoms. There may be other produc tion mechanisms at work such as reactions taking place on the surface of interstellar dust grains.

Zielgruppe

Research

Autoren/Hrsg.

Ponnamperuma, Cyril

Inhaltsverzeichnis

Cosmochemistry and the Origin of Life.- Synthesis of the Chemical Elements.- The Largest Molecules in Space: Interstellar Dust.- Comets, Interstellar Molecules, and the Origin of Life.- Impact of Solar System Exploration on Theories of Chemical Evolution and the Origin of Life.- The Chemical Composition and Climatology of the Earth’s Early Atmosphere.- The Dating of the Earliest Sediments on Earth.- Inorganic Chemistry of Earliest Sediments: Bioinorganic Chemical Aspects of the Origin and Evolution of Life.- Biologically Mediated Isotope Fractionations: Biochemistry, Geochemical Significance and Preservation in the Earth’s Oldest Sediments.- Organic Molecules as Chemical Fossils — The Molecular Fossil Record.- Appendix: Cosmochemistry and the Origin of Life.- Participants.