The Composition of Matter : Symposium Honouring Johannes Geiss on the Occasion of His 80th Birthday

This volume consists of papers developed from a joint ACE/ISSI symposium on the "Composition of Matter" honoring the occasion of Johannes Geiss's 80th birthdayThe purpose of the symposium was to explore new insights into the composition of solar-system and galactic matter, and fractionation processes affecting samples of this matter, that have been brought about by recent space missions, ground-based studies, and theoretical advances. It was convened by G. M. Mason (chair), P. Bochsler, J. J. Connell, G. Gloeckler, M. H. Israel, R. A. Mewaldt, R. von Steiger, M. E. Wiedenbeck, and T. H. Zurbuchen. The convenors compiled a program of overview, invited, contributed, and poster presentations that was organized into five sessions: Linking primordial to solar composition, Planetary samples, Solar sources and fractionation processes, Interstellar gas and Cosmic rays.The structure of the volume at hand largely follows the structure of the symposium. The editors are happy that it includes almost all of the overview and invited papers and many of the contributed ones. we thank Johannes for providing us with the occasion to gather in his name and for shaping and supporting the careers of so many of us. May 2007 R. von Steiger, G. Gloeckler, G.M. Mason Space Sci Rev (2007) 130: 3–4 DOI 10.1007/s11214-007-9240-0 Acknowledgement Published online: 21 July 2007 © Springer Science+Business Media B.V. 2007 Early in 2006, Edward C. Stone, Principal Investigator of NASA's Advanced Composition Explorer (ACE); Len A. Fisk, Chair of the Space Studies Board of the US National Research Council; and the Directorate of the International Space Science Institute (ISSI), Roger M. Bonnet, Andre Balogh and Rudolf von Steiger, agreed to hold a joint ACE/ISSI Symposium on the “Composition of Matter”, at the occasion of my 80th birthday. I feel deeply honoured by this exceptional distinction and was thrilled to participate, because for more than 50 years my research has been centred around measurements of the composition of matter of various origins, reaching—in geocentric coordinates—from deep-sea sediments to the limits of solar in uence, where comets come from and where the solar wind meets the interstellar medium. The symposium at Grindelwald, beautifully located at the foot of the Bernese Alps, was organised by Ruedi von Steiger, Silvia Wenger and Barbara Gerber, who created the special atmosphere for which ISSI meetings have become known. This Volume Consists Of Papers Developed From A Joint Ace/issi Symposium At The Occasion Of The Eightieth Birthday Of Johannes Geiss. The Symposium Explored Insights Into The Composition Of Solar-system And Galactic Matter That Have Been Brought About By Recent Space Missions, Ground-based Studies, And Theoretical Advances. Coverage Includes Linking Primordial To Solar Composition, Planetary Samples, Solar Sources And Fractionation Processes, And Interstellar Gas And Cosmic Rays.