Chris P McKay

Summary

Affiliation: NASA Ames Research Center
Country: USA

Publications

  1. pmc What is life--and how do we search for it in other worlds?
    Chris P McKay
    NASA Ames Research Center, USA
    PLoS Biol 2:E302. 2004
  2. ncbi request reprint Magnetotactic bacteria on Earth and on Mars
    Christopher P McKay
    Space Science Division, NASA Ames Research Center, Moffett Field, California 94035, USA
    Astrobiology 3:263-70. 2003
  3. ncbi request reprint Temperature lapse rate and methane in Titan's troposphere
    C P McKay
    Space Science Division, NASA Ames Research Center, Moffett Field, California 94035, USA
    Icarus 129:498-505. 1997
  4. ncbi request reprint Past, present, and future life on Mars
    C P McKay
    Space Science Division, NASA Ames Research Center, Moffett Field, CA, USA
    Gravit Space Biol Bull 11:41-50. 1998
  5. ncbi request reprint Spectra of simulated lightning on Venus, Jupiter, and Titan
    W J Borucki
    NASA Ames Research Center, Moffett Field, California 94035, USA
    Icarus 64:221-32. 1985
  6. ncbi request reprint The ultraviolet environment of Mars: biological implications past, present, and future
    C S Cockell
    NASA Ames Research Center, Moffett Field, California 94035 1000, USA
    Icarus 146:343-59. 2000
  7. ncbi request reprint Organic synthesis in experimental impact shocks
    C P McKay
    Space Science Division, NASA Ames Research Center, Moffett Field, CA 94035, USA
    Science 276:390-2. 1997
  8. ncbi request reprint The physics, biology, and environmental ethics of making mars habitable
    C P McKay
    Space Science Division, NASA Ames Research Center, Moffett Field, CA 94035, USA
    Astrobiology 1:89-109. 2001
  9. ncbi request reprint Solid organic matter in the atmosphere and on the surface of outer Solar System bodies
    B N Khare
    MS 239-14, NASA Ames Research Center, Moffett Field, CA 94035-1000, USA
    Adv Space Res 27:299-307. 2001
  10. ncbi request reprint Episodic ocean-induced CO2 greenhouse on Mars: implications for fluvial valley formation
    V C Gulick
    Space Science Division, NASA Ames Research Center, Moffett Field, California 94035, USA
    Icarus 130:68-86. 1997

Collaborators

Detail Information

Publications34

  1. pmc What is life--and how do we search for it in other worlds?
    Chris P McKay
    NASA Ames Research Center, USA
    PLoS Biol 2:E302. 2004
  2. ncbi request reprint Magnetotactic bacteria on Earth and on Mars
    Christopher P McKay
    Space Science Division, NASA Ames Research Center, Moffett Field, California 94035, USA
    Astrobiology 3:263-70. 2003
    ..Deposits in ancient lakebeds could contain well-preserved chains of magnetite clearly indicating a biogenic origin...
  3. ncbi request reprint Temperature lapse rate and methane in Titan's troposphere
    C P McKay
    Space Science Division, NASA Ames Research Center, Moffett Field, California 94035, USA
    Icarus 129:498-505. 1997
    ..The lapse rate is everywhere stable against dry convection, but is unstable to moist convection. This finding is consistent with a supersaturated atmosphere in which condensation-and hence moist convection-is inhibited...
  4. ncbi request reprint Past, present, and future life on Mars
    C P McKay
    Space Science Division, NASA Ames Research Center, Moffett Field, CA, USA
    Gravit Space Biol Bull 11:41-50. 1998
    ..In the longer term, it is possible that in the future we might restore a habitable climate on Mars, returning it to the life-bearing state it may have enjoyed early in its history...
  5. ncbi request reprint Spectra of simulated lightning on Venus, Jupiter, and Titan
    W J Borucki
    NASA Ames Research Center, Moffett Field, California 94035, USA
    Icarus 64:221-32. 1985
    ..In particular, the detection of inert gases such as helium should be possible and the relative abundance of these gases compared to major constituents might be determined...
  6. ncbi request reprint The ultraviolet environment of Mars: biological implications past, present, and future
    C S Cockell
    NASA Ames Research Center, Moffett Field, California 94035 1000, USA
    Icarus 146:343-59. 2000
    ..Data are also presented for the effects of hypothetical planetary atmospheric manipulations on the martian UV radiation environment with estimates of the biological consequences of such manipulations...
  7. ncbi request reprint Organic synthesis in experimental impact shocks
    C P McKay
    Space Science Division, NASA Ames Research Center, Moffett Field, CA 94035, USA
    Science 276:390-2. 1997
    ..No organic molecules were produced in a carbon dioxide-rich mixture, which is at odds with thermodynamic equilibrium approaches to shock chemistry and has implications for the modeling of shock-produced organic molecules on early Earth...
  8. ncbi request reprint The physics, biology, and environmental ethics of making mars habitable
    C P McKay
    Space Science Division, NASA Ames Research Center, Moffett Field, CA 94035, USA
    Astrobiology 1:89-109. 2001
    ..Ethical issues associated with bringing life to Mars center on the possibility of indigenous martian life and the relative value of a planet with or without a global biosphere...
  9. ncbi request reprint Solid organic matter in the atmosphere and on the surface of outer Solar System bodies
    B N Khare
    MS 239-14, NASA Ames Research Center, Moffett Field, CA 94035-1000, USA
    Adv Space Res 27:299-307. 2001
    ....
  10. ncbi request reprint Episodic ocean-induced CO2 greenhouse on Mars: implications for fluvial valley formation
    V C Gulick
    Space Science Division, NASA Ames Research Center, Moffett Field, California 94035, USA
    Icarus 130:68-86. 1997
    ..Glacial or periglacial landforms would also be a consequence of such a mechanism...
  11. ncbi request reprint A model for the evolution of CO2 on Mars
    R M Haberle
    Space Sciences Division, NASA Ames Research Center, Moffett Field, California 94035, USA
    Icarus 109:102-20. 1994
    ..Our modeling suggests this critical initial amount of CO2 is between 1 and 2 bar, but its true value will depend on all factors affecting the polar heat budget...
  12. ncbi request reprint The carbon budget in the outer solar nebula
    D P Simonelli
    Space Science Division, NASA Ames Research Center, Moffett Field, California 94035, USA
    Icarus 82:1-35. 1989
    ..We conclude that the majority of the carbon in the outer solar nebula was in gaseous CO; 10% to a few tens of percent of the C was in condensed organic materials; and at least a trace amount of carbon was in methane gas...
  13. ncbi request reprint Antarctic climate cooling and terrestrial ecosystem response
    Peter T Doran
    Department of Earth and Environmental Sciences, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607, USA
    Nature 415:517-20. 2002
    ..Continental Antarctic cooling, especially the seasonality of cooling, poses challenges to models of climate and ecosystem change...
  14. ncbi request reprint A preliminary survey of non-lichenized fungi cultured from the hyperarid Atacama Desert of Chile
    Catharine A Conley
    Planetary Sciences Division, Science Mission Directorate, NASA Headquarters, Washington, DC 20546, USA
    Astrobiology 6:521-6. 2006
    ..All fungi identified in this preliminary survey are spore-forming saprobes that are readily dispersed by wind, a likely mechanism that accounts for their presence in the central Atacama Desert...
  15. ncbi request reprint The photochemical stability of carbonates on Mars
    Richard Quinn
    SETI Institute, NASA Ames Research Center, Moffett Field, California 94039, USA
    Astrobiology 6:581-91. 2006
    ....
  16. pmc The limitations on organic detection in Mars-like soils by thermal volatilization-gas chromatography-MS and their implications for the Viking results
    Rafael Navarro-González
    Laboratorio de Quimica de Plasmas y Estudios Planetarios, Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico, Circuito Exterior, Ciudad Universitaria, P O Box 70 543, 04510 Mexico D F, Mexico
    Proc Natl Acad Sci U S A 103:16089-94. 2006
    ..We suggest that the design of future organic instruments for Mars should include other methods to be able to detect extinct and/or extant life...
  17. ncbi request reprint Hypolithic community shifts occur as a result of liquid water availability along environmental gradients in China's hot and cold hyperarid deserts
    Stephen B Pointing
    School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China
    Environ Microbiol 9:414-24. 2007
    ....
  18. ncbi request reprint Deinococcus peraridilitoris sp. nov., isolated from a coastal desert
    Fred A Rainey
    Department of Biological Sciences, 202 Life Sciences Building, Louisiana State University, Baton Rouge, LA 70803, USA
    Int J Syst Evol Microbiol 57:1408-12. 2007
    ..nov. is proposed. The type strain is KR-200(T) (=LMG 22246(T)=CIP 109416(T))...
  19. ncbi request reprint Cyanobacterial ecology across environmental gradients and spatial scales in China's hot and cold deserts
    Kimberley A Warren-Rhodes
    NASA Ames Research Center, Moffett Field, CA 94035, USA
    FEMS Microbiol Ecol 61:470-82. 2007
    ..We propose that landscape ecology concepts and models linking desert vegetation, biological feedbacks and ecohydrological processes are applicable to microbial communities...
  20. doi request reprint Ultraviolet radiation-induced limitation to epilithic microbial growth in arid deserts--dosimetric experiments in the hyperarid core of the Atacama Desert
    Charles S Cockell
    PSSRI, Open University, Milton Keynes, MK7 6AA, UK
    J Photochem Photobiol B 90:79-87. 2008
    ..These data further show that UV radiation can be an important limiting factor in surface biological rock weathering in arid regions...
  21. doi request reprint Testing the H2O2-H2O hypothesis for life on Mars with the TEGA instrument on the Phoenix lander
    Dirk Schulze-Makuch
    School of Earth and Environmental Sciences, Washington State University, Pullman, Washington 99164, USA
    Astrobiology 8:205-14. 2008
    ..Our experiments provide a baseline for an unbiased test for chemical versus biological responses, which can be applied at the time the Phoenix lander transmits its first results from the martian surface...
  22. ncbi request reprint Hypolithic cyanobacteria, dry limit of photosynthesis, and microbial ecology in the hyperarid Atacama Desert
    Kimberley A Warren-Rhodes
    NASA Ames Research Center, MS 245 3, Moffett Field, CA 94035, USA
    Microb Ecol 52:389-98. 2006
    ..If so, such microhabitats would probably be widely dispersed, difficult to detect, and millimeters away from virtually lifeless surroundings...
  23. ncbi request reprint Endolithic cyanobacteria in halite rocks from the hyperarid core of the Atacama Desert
    Jacek Wierzchos
    Servei de Microscopia Electronica, Universitat de Lleida, Lleida, Spain
    Astrobiology 6:415-22. 2006
    ..Photosynthetic microorganisms within dry evaporite rocks could be an important and previously unrecognized target for the search for life within our Solar System...
  24. ncbi request reprint Survival of endospores of Bacillus subtilis on spacecraft surfaces under simulated martian environments: implications for the forward contamination of Mars
    Andrew C Schuerger
    Dynamac Corporation, Kennedy Space Center, FL 32899, USA
    Icarus 165:253-76. 2003
    ..Furthermore, these results suggest that the high UV fluence rates on the martian surface can be an important resource in minimizing the forward contamination of Mars...
  25. ncbi request reprint Key science questions from the second conference on early Mars: geologic, hydrologic, and climatic evolution and the implications for life
    David W Beaty
    Mars Program Office, Jet Propulsion Laboratory California Institute of Technology, Pasadena, CA 91109 8099, USA
    Astrobiology 5:663-89. 2005
    ....
  26. ncbi request reprint Near-term lander experiments for growing plants on Mars: requirements for information on chemical and physical properties of Mars regolith
    Andrew C Schuerger
    Dynamac Corporation, Kennedy Space Center, FL 32899, USA
    Life Support Biosph Sci 8:137-47. 2002
    ..Soil physical tests useful for plant biology studies in Mars regolith include bulk density, particle size distribution, porosity, water retention, and hydraulic conductivity...
  27. ncbi request reprint Growth of methanogens on a Mars soil simulant
    Timothy A Kral
    Arkansas Oklahoma Center for Space and Planetary Sciences, University of Arkansas, Fayetteville 72701, USA
    Orig Life Evol Biosph 34:615-26. 2004
    ..We report here that certain methanogens can grow on a Mars soil simulant when supplied with carbon dioxide, molecular hydrogen, and varying amounts of water...
  28. ncbi request reprint Temperature and moisture conditions for life in the extreme arid region of the Atacama desert: four years of observations including the El Niño of 1997-1998
    Christopher P McKay
    Space Science Division, NASA Ames Research Center, Moffett Field, California 94035, USA
    Astrobiology 3:393-406. 2003
    ..The paucity of liquid water under stones is consistent with the apparent absence of hypolithic (under-stone) cyanobacteria, the only known primary producers in such extreme deserts...
  29. ncbi request reprint Mars-like soils in the Atacama Desert, Chile, and the dry limit of microbial life
    Rafael Navarro-González
    Laboratorio de Quimica de Plasmas y Estudios Planetarios, Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico, Circuito Exterior, Ciudad Universitaria, Apartado Postal 70 543, Mexico City, 04510, Mexico
    Science 302:1018-21. 2003
    ..Incubation experiments, patterned after the Viking labeled-release experiment but with separate biological and nonbiological isomers, show active decomposition of organic species in these soils by nonbiological processes...
  30. pmc Formation and character of an ancient 19-m ice cover and underlying trapped brine in an "ice-sealed" east Antarctic lake
    Peter T Doran
    Department of Earth and Environmental Sciences, University of Illinois, 845 West Taylor Street, MS 186, Chicago 60607, USA
    Proc Natl Acad Sci U S A 100:26-31. 2003
    ..To our knowledge, Lake Vida has the thickest subaerial lake ice cover recorded and may represent a previously undiscovered end-member lacustrine ecosystem on Earth...
  31. ncbi request reprint Laboratory studies of butane nucleation on organic haze particles: application to Titan's clouds
    Daniel B Curtis
    Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309, USA
    J Phys Chem A 109:1382-90. 2005
    ..Requiring a high saturation ratio for butane nucleation will reduce the optical depth of butane clouds by a factor of 100 because the particles will be fewer in number for a given condensed mass...
  32. ncbi request reprint Haze aerosols in the atmosphere of early Earth: manna from heaven
    Melissa G Trainer
    Department of Chemistry and Biochemistry and Cooperative Institute for Research in Environmental Sciences, University of Colorado at Boulder, Boulder, Colorado 80309 0216, USA
    Astrobiology 4:409-19. 2004
    ..We also show that as the C/O ratio decreases, the organic particles produced are more oxidized and contain biologically labile compounds. After life arose, the haze may thus have provided food for biota...
  33. ncbi request reprint Why O2 is required by complex life on habitable planets and the concept of planetary "oxygenation time"
    David C Catling
    Department of Atmospheric Sciences and Astrobiology Program, University of Washington, Seattle, Washington, USA
    Astrobiology 5:415-38. 2005
    ..Conversely, Earth-like planets orbiting long-lived stars are potentially favorable habitats for complex life...
  34. doi request reprint Description of four novel psychrophilic, ionizing radiation-sensitive Deinococcus species from alpine environments
    Ryan P Callegan
    Department of Biological Sciences, Louisiana State University, Baton Rouge, LA 7080, USA
    Int J Syst Evol Microbiol 58:1252-8. 2008
    ..nov.), ME-04-01-32T (=LMG 24022T=NRRL B-41947T; Deinococcus altitudinis sp. nov.) and ME-04-04-52T (=LMG 24283T=NRRL B-41948T; Deinococcus alpinitundrae sp. nov.) represent the type strains of four novel species of the genus Deinococcus...