Astronomical Origins of Life

Panspermia 2000.- 1. General Considerations.- On a Possibly Fundamental Principle in Chemistry as Viewed in a Cosmogonic Context.- Biological Activity in the Early Solar System in its Outer Regions.- An Object within a Particle of Extraterrestrial Origin Compared with an Object of Presumed Terrestrial Origin.- The Viability with Respect to Temperature of Micro-Organisms Incident on the Earth’s Atmosphere.- A Laboratory Experiment with Relevance to the Survival of Micro-Organisms Entering a Planetary Atmosphere.- Biological Evolution.- Metallic Particles in Astronomy.- The Universe and Life: Deductions from the Weak Anthropic Principle.- Miller-Urey Synthesis in the Nuclei of Galaxies.- 2. Cosmic Organic Polymers.- Formaldehyde Polymers in Interstellar Space.- Formaldehyde Polymers in Comets.- Composition of Cometary Dust: the Case against Silicates.- Primitive Grain Clumps and Organic Compounds in Carbonaceous Chondrites.- Spectroscopic Evidence for Interstellar Grain Clumps in Meteoritic Inclusions.- Calculations of Infrared Fluxes from Galactic Sources for a Polysaccharide Grain Model.- 3. Cosmic Micro-Organisms: Infrared Characterisation.- Infrared Spectroscopy of Micro-Organisms Near 3.4 ?m in Relation to Geology and Astronomy.- Infrared Spectroscopy over the 2.9-3.9 ?m Waveband in Biochemistry and Astronomy.- 2.8-3.6 ?m Spectra of Micro-Organisms with Varying H2O Ice-Content.- Organo-Siliceous Biomolecules and the Infrared Spectrum of the Trapezium Nebula.- The Spectroscopic Identification of Interstellar Grains.- The Availability of Phosphorus in the Bacterial Model of the Interstellar Grains.- Diatoms on Earth, Comets, Europa an. i. Interstellar Space.- A Diatom Model of Dust in the Trapezium Nebula.- Infrared Evidence for Panspermia: An Update.- 4. Evidencefrom Interstellar Extinction.- On the Nature of Interstellar Grains.- A Model for Interstellar Extinction.- The Ultraviolet Absorbance of Presumably Interstellar Bacteria and Related Matters.- The Case against Graphite Particles in Interstellar Space.- 5. Biogenic Aromatic Molecules in Space.- Organic Molecules in Interstellar Dust: A Possible Spectral Signature at ?.2200Å?.- Identification of the ? 2 200 Å Interstellar Absorption Feature.- A Unified Model for the 3.28 ? Emission and the 2200 Å Interstellar Extinction Feature.- Aromatic Hydrocarbons in Very Small Interstellar Grains.- An Integrated 2.5-12.5 ?m Emission Spectrum of Naturally-Occurring Aromatic Molecules.- Biofluorescence and the Extended Red Emission in Astrophysical Sources.- 6. Comets and Life.- Comets, Ice Ages, and Ecological Catastrophes.- Comets - A Vehicle for Panspermia.- Some Predictions on the Nature of Comet Halley.- A Model of the 2-1 ?m Spectrum of Comet Halley.- Modelling the 5-30 ?ectrum of Comet Halley.- Very Small Dust Particles (VSDP’met C/19962 B2 (Hyakutake).- The Astonishing Redness of Kuiper-Belt Objects.- Eruptions of Comet Hale-Bopp at 6.5 AU.- Infrared Radiation from Comet Hale-Bopp.