Memorial tribute to astrobiology pioneers Dr. David S. Mckay and academician Georgy A. Zavarzin

During the past two years, the world has lost two great pioneers of the field of Astrobiology-Dr. David Stewart McKay who worked at the NASA-Johnson Space Center in Houston, Texas, USA and Academician Georgy Alexandrovich Zavarzin of the Institute of Microbiology of the Russian Academy of Sciences and Professor of the Moscow State University in Moscow, Russia. The Volume of the Proceedings of the 2013 SPIE Instruments, Methods, and Missions for Astrobiology XVI is dedicated to the memory of these great scientists. We remember our dear friends and review some of their many important contributions to Planetary Science, Geology, Meteoritics, Microbiology and Astrobiology.

[1]  David S. McKay,et al.  Origins of magnetite nanocrystals in Martian meteorite ALH84001 , 2009 .

[2]  P. Butler,et al.  The source of sublimates on the Apollo 15 green and Apollo 17 orange glass samples. , 1975 .

[3]  M. F. Mckay,et al.  Truncated hexa-octahedral magnetite crystals in ALH84001: Presumptive biosignatures , 2001, Proceedings of the National Academy of Sciences of the United States of America.

[4]  Richard V. Morris,et al.  Mineralogical and chemical characterization of lunar highland soils: Insights into the space weathering of soils on airless bodies , 2010 .

[5]  J. Damsté,et al.  Zavarzinella formosa gen. nov., sp. nov., a novel stalked, Gemmata-like planctomycete from a Siberian peat bog. , 2009, International journal of systematic and evolutionary microbiology.

[6]  Carmen Ascaso,et al.  Chains of magnetite crystals in the meteorite ALH84001: Evidence of biological origin , 2001, Proceedings of the National Academy of Sciences of the United States of America.

[7]  J. Kirschvink,et al.  Elongated prismatic magnetite crystals in ALH84001 carbonate globules: potential Martian magnetofossils. , 2000, Geochimica et cosmochimica acta.

[8]  R. Zare,et al.  Search for Past Life on Mars: Possible Relic Biogenic Activity in Martian Meteorite ALH84001 , 1996, Science.

[9]  G. Heiken,et al.  A model for eruption behavior of a volcanic vent in eastern Mare Serenitatis , 1977 .

[10]  David S. McKay,et al.  Life on Mars: new evidence from martian meteorites , 2009, Optical Engineering + Applications.

[11]  D. Mckay,et al.  The nature and origin of rims on lunar soil grains , 1997 .

[12]  Frances Westall,et al.  Phosphate biomineralization of cambrian microorganisms , 1998, Optics & Photonics.

[13]  G. Zavarzin,et al.  [Budding bacteria]. , 1961, Mikrobiologiia.

[14]  William T. Wallace,et al.  Lunar Airborne Dust Toxicity Hazard Assessments (Invited) , 2009 .

[15]  Carlton C. Allen,et al.  Bio-Weathering of Lunar and Martian Rocks by Cyanobacteria: A Resource for Moon and Mars Exploration , 2008 .

[16]  David S. McKay,et al.  Grain size and the evolution of lunar soils. , 1977 .

[17]  D. Mckay,et al.  Discovery of Vapor Deposits in the Lunar Regolith , 1993, Science.

[18]  Richard V. Morris,et al.  Space weathering on the Moon: Patina on Apollo 17 samples 75075 and 76015 , 1999 .

[19]  T. Tourova,et al.  Fuchsiella alkaliacetigena gen. nov., sp. nov., an alkaliphilic, lithoautotrophic homoacetogen from a soda lake. , 2012, International journal of systematic and evolutionary microbiology.

[20]  Bonnie L. Cooper,et al.  Lunar dust and lunar simulant activation and monitoring , 2008 .

[21]  David S. McKay,et al.  Lunar deposits of possible pyroclastic origin , 1974 .

[22]  D. Mckay,et al.  Pathological Calcification and Replicating Calcifying-Nanoparticles: General Approach and Correlation , 2010, Pediatric Research.