meteoroids

Summary

Summary: Any solid objects moving in interplanetary space that are smaller than a planet or asteroid but larger than a molecule. Meteorites are any meteoroid that has fallen to a planetary surface. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)

Top Publications

  1. ncbi How and where did life on Earth arise?
    Carl Zimmer
    Science 309:89. 2005
  2. ncbi Martian surface paleotemperatures from thermochronology of meteorites
    David L Shuster
    Division of Geological and Planetary Sciences, California Institute of Technology, 100 23, Pasadena, CA 91125, USA
    Science 309:594-600. 2005
  3. pmc Interferometric observations of large biologically interesting interstellar and cometary molecules
    Lewis E Snyder
    Department of Astronomy, University of Illinois, 1002 West Green Street, Urbana, IL 61801, USA
    Proc Natl Acad Sci U S A 103:12243-8. 2006
  4. ncbi Detection of methane in the atmosphere of Mars
    Vittorio Formisano
    Istituto di Fisica dello Spazio Interplanetario INAF IFSI, Via del Fosso del Cavaliere 100, 00133 Rome, Italy
    Science 306:1758-61. 2004
  5. ncbi Search for EPR markers of the history and origin of the insoluble organic matter in extraterrestrial and terrestrial rocks
    Didier Gourier
    Ecole Nationale Supérieure de Chimie de Paris ENSCP, Laboratoire de Chimie appliquée de l Etat Solide, UMR CNRS 7574, 11 rue Pierre et Marie Curie, 75231 Paris 05, France
    Spectrochim Acta A Mol Biomol Spectrosc 60:1349-57. 2004
  6. ncbi The universe: a cryogenic habitat for microbial life
    Chandra Wickramasinghe
    Cardiff Centre for Astrobiology, Cardiff University, 2 North Road, Cardiff CF10 3DY, UK
    Cryobiology 48:113-25. 2004
  7. ncbi Necessary, but not sufficient: Raman identification of disordered carbon as a signature of ancient life
    Jill Dill Pasteris
    Department of Earth and Planetary Sciences, Washington University, St Louis, Missouri 63130 4899, USA
    Astrobiology 3:727-38. 2003
  8. ncbi On the survivability and detectability of terrestrial meteorites on the moon
    Ian A Crawford
    Birkbeck UCL Research School of Earth Sciences, London, United Kingdom
    Astrobiology 8:242-52. 2008
  9. ncbi Questioning the oldest signs of life
    Sarah Simpson
    Sci Am 288:70-7. 2003
  10. ncbi Searching for life in the Universe: unconventional methods for an unconventional problem
    K H Nealson
    University of Southern California, Los Angeles, CA 90089, USA
    Int Microbiol 5:223-30. 2002

Research Grants

  1. BIOCHEMICAL MODEL REACTIONS
    Ronald Breslow; Fiscal Year: 2007
  2. Ultrapid DNA Sequencing by a Nanopore Instrument
    David Deamer; Fiscal Year: 2005

Detail Information

Publications200 found, 100 shown here

  1. ncbi How and where did life on Earth arise?
    Carl Zimmer
    Science 309:89. 2005
  2. ncbi Martian surface paleotemperatures from thermochronology of meteorites
    David L Shuster
    Division of Geological and Planetary Sciences, California Institute of Technology, 100 23, Pasadena, CA 91125, USA
    Science 309:594-600. 2005
    ..Our calculations also suggest that for most of the past 4 billion years, ambient near-surface temperatures on Mars are unlikely to have been much higher than the present cold (<0 degrees C) state...
  3. pmc Interferometric observations of large biologically interesting interstellar and cometary molecules
    Lewis E Snyder
    Department of Astronomy, University of Illinois, 1002 West Green Street, Urbana, IL 61801, USA
    Proc Natl Acad Sci U S A 103:12243-8. 2006
    ..Major advances in understanding the formation chemistry of hot core species can come from observations with the next generation of sensitive, high-resolution arrays...
  4. ncbi Detection of methane in the atmosphere of Mars
    Vittorio Formisano
    Istituto di Fisica dello Spazio Interplanetario INAF IFSI, Via del Fosso del Cavaliere 100, 00133 Rome, Italy
    Science 306:1758-61. 2004
    ..However, the mixing ratio varies between 0 and 30 ppbv over the planet. The source of methane could be either biogenic or nonbiogenic, including past or present subsurface microorganisms, hydrothermal activity, or cometary impacts...
  5. ncbi Search for EPR markers of the history and origin of the insoluble organic matter in extraterrestrial and terrestrial rocks
    Didier Gourier
    Ecole Nationale Supérieure de Chimie de Paris ENSCP, Laboratoire de Chimie appliquée de l Etat Solide, UMR CNRS 7574, 11 rue Pierre et Marie Curie, 75231 Paris 05, France
    Spectrochim Acta A Mol Biomol Spectrosc 60:1349-57. 2004
    ..We conclude from this result that the organic matter in the oldest cherts (3.5 billion years) has the same age as their SiO2 matrix, and is not due to a latter contamination by bacteria, as was recently found in meteoritic samples...
  6. ncbi The universe: a cryogenic habitat for microbial life
    Chandra Wickramasinghe
    Cardiff Centre for Astrobiology, Cardiff University, 2 North Road, Cardiff CF10 3DY, UK
    Cryobiology 48:113-25. 2004
    ..The ancient theory of panspermia may be on the verge of vindication, in which case the entire universe would be a grand crucible of cryomicrobiology...
  7. ncbi Necessary, but not sufficient: Raman identification of disordered carbon as a signature of ancient life
    Jill Dill Pasteris
    Department of Earth and Planetary Sciences, Washington University, St Louis, Missouri 63130 4899, USA
    Astrobiology 3:727-38. 2003
    ..Clearly, the fact that small, opaque grains consist of disordered carbonaceous material is necessary, but not sufficient, to prove them to be residues of cellular material and, thus, biogenic...
  8. ncbi On the survivability and detectability of terrestrial meteorites on the moon
    Ian A Crawford
    Birkbeck UCL Research School of Earth Sciences, London, United Kingdom
    Astrobiology 8:242-52. 2008
    ..5 km/s) or oblique (<or=45 degrees) impacts, or both. We outline possible mechanisms for locating such materials on the Moon and conclude that searching for them would be a scientifically valuable activity for future lunar exploration...
  9. ncbi Questioning the oldest signs of life
    Sarah Simpson
    Sci Am 288:70-7. 2003
  10. ncbi Searching for life in the Universe: unconventional methods for an unconventional problem
    K H Nealson
    University of Southern California, Los Angeles, CA 90089, USA
    Int Microbiol 5:223-30. 2002
    ....
  11. ncbi The Perseus Exobiology mission on MIR: behaviour of amino acids and peptides in Earth orbit
    F Boillot
    Centre de Biophysique Moleculaire, rue Charles Sadron, 45071 Orleans Cedex 2, France
    Orig Life Evol Biosph 32:359-85. 2002
    ..The possible exogenous origin of biological building blocks is discussed with respect to the stability to the molecules and the nature of the associated minerals...
  12. ncbi Chemical markers for bacteria in extraterrestrial samples
    Alvin Fox
    Department of Microbiology and Immunology, School of Medicine, University of South Carolina, Columbia 29208, USA
    Anat Rec 268:180-5. 2002
    ..Such analyses may also be important in studies designed to search for the presence of life on Mars...
  13. ncbi Germs in space. Joshua Lederberg, exobiology, and the public imagination, 1958-1964
    Audra J Wolfe
    Rutgers University Press, 100 Joyce Kilmer Avenue, Piscataway, New Jersey 08854, USA
    Isis 93:183-205. 2002
    ....
  14. ncbi Lithopanspermia in star-forming clusters
    Fred C Adams
    Michigan Center for Theoretical Physics, Physics Department and Astronomy Department, University of Michigan, Ann Arbor, Michigan 48109, USA
    Astrobiology 5:497-514. 2005
    ..Finally, we discuss the question of internal versus external seeding of clusters and the possibility of Earth seeding young clusters over its biologically active lifetime...
  15. ncbi Astrobiology science conference. Astrobiologists try to 'follow the water to life'
    Robert Irion
    Science 296:647-8. 2002
  16. ncbi Laboratory investigations of the survivability of bacteria in hypervelocity impacts
    M J Burchell
    Unit for Space Sciences and Astrophysics, University of Kent at Canterbury, Kent CT2 7NR, UK
    Adv Space Res 28:707-12. 2001
    ..This crudely simulated aero-capture in a planetary atmosphere. No evidence for Rhodococcus growth was found from the projectiles captured in the aerogel from any of the four shots...
  17. ncbi Solar system exploration. Planetary science's defining moment
    Andrew Lawler
    Science 295:32-7. 2002
  18. ncbi Critical issues in connection with human missions to Mars: protection of and from the Martian environment
    G Horneck
    German Aerospace Center DLR, Institute of Aerospace Medicine, Cologne, Germany
    Adv Space Res 31:87-95. 2003
    ..Records of human activities on the planet's surface should be maintained in sufficient detail that future scientific experimenters can determine whether environmental modifications have resulted from explorations...
  19. ncbi Functions and possible provenance of primordial proteins
    Andrei P Sommer
    Central Institute of Biomedical Engineering, University of Ulm, 89081 Ulm, Germany
    J Proteome Res 3:1296-9. 2004
    ..An analysis of the slime's biological functions may lead to novel strategies suitable to block adhesion modalities in modern bacterial populations...
  20. ncbi Observations from a 4-year contamination study of a sample depth profile through Martian meteorite Nakhla
    Jan Toporski
    Geophysical Laboratory, Carnegie Institution of Washington, Washington, DC, USA
    Astrobiology 7:389-401. 2007
    ..Time-resolved in situ observations further allow observation of possible (bio)dynamics within the system...
  21. ncbi Lunar and planetary science conference. New signs of ancient life in another Martian meteorite?
    Richard A Kerr
    Science 311:1858-9. 2006
  22. ncbi Planetary science: clays in the history of Mars
    Horton Newsom
    Nature 438:570-1. 2005
  23. ncbi Did life come from another world?
    David Warmflash
    University of Houston, USA
    Sci Am 293:64-71. 2005
  24. ncbi Was Earth ever infected by martian biota? Clues from radioresistant bacteria
    Anatoly K Pavlov
    Laboratory of Nuclear and Space Physics, Ioffe Physico Technical Institute of Russian Academy of Sciences, St Petersburg, Russia
    Astrobiology 6:911-8. 2006
    ..Our mechanism implies multiple and frequent exchanges of biota between Mars and Earth...
  25. ncbi Planetary science. Mars Orbiter's swan song: the red planet is a-changin'
    Richard A Kerr
    Science 314:1528-9. 2006
  26. ncbi Present-day impact cratering rate and contemporary gully activity on Mars
    Michael C Malin
    Malin Space Science Systems, Post Office Box 910148, San Diego, CA 92191 0148, USA
    Science 314:1573-7. 2006
    ..The observations suggest that liquid water flowed on the surface of Mars during the past decade...
  27. ncbi Deep Impact observations by OSIRIS onboard the Rosetta spacecraft
    Horst Uwe Keller
    Max Planck Institut für Sonnensystemforschung, Max Planck Strasse 2, 37191 Katlenburg Lindau, Germany
    Science 310:281-3. 2005
    ..Dust Afrho values before and long after the impact confirm the slight decrease of cometary activity. The dust-to-water mass ratio was much larger than 1...
  28. ncbi Aqueous corrosion of phosphide minerals from iron meteorites: a highly reactive source of prebiotic phosphorus on the surface of the early Earth
    Matthew A Pasek
    Lunar and Planetary Laboratory, University of Arizona, Tucson, Arizona 85721, USA
    Astrobiology 5:515-35. 2005
    ..Phosphonate oxidation is rapid in the presence of Fe metal but negligible in the presence of magnetite and in the control sample. The rate of hypophosphite oxidation is independent of reaction substrate...
  29. ncbi Impact seeding and reseeding in the inner solar system
    Brett Gladman
    Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia, Canada
    Astrobiology 5:483-96. 2005
    ..Early bacterial life on Earth could have been safeguarded from any purported impact-induced extinction by temporary refuge in space...
  30. ncbi Supernova antineutrino interactions cause chiral symmetry breaking and possibly homochiral biomaterials for life
    David B Cline
    Astrophysics Division, Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA
    Chirality 17:S234-9. 2005
    ..The weak interaction breaks chiral symmetry, but a robust process is needed. We propose that, in an SNII explosion, antineutrinos could provide this mechanism in the solar cloud. Pre-simple estimates of this possibility are given here...
  31. ncbi Organics captured from comet 81P/Wild 2 by the Stardust spacecraft
    Scott A Sandford
    Astrophysics Branch, NASA Ames Research Center, Moffett Field, CA 94035, USA
    Science 314:1720-4. 2006
    ..Although the variable extent of modification of these materials by impact capture is not yet fully constrained, a diverse suite of organic compounds is present and identifiable within the returned samples...
  32. ncbi Biological space experiments for the simulation of Martian conditions: UV radiation and Martian soil analogues
    P Rettberg
    DLR, Institute of Aerospace Medicine, Radiation Biology Section, Linder Hohe, Koln, Germany
    Adv Space Res 33:1294-301. 2004
    ....
  33. ncbi Deep UV Raman imaging for astrobiology
    Barry E DiGregorio
    Anal Chem 79:798. 2007
  34. ncbi Comparison of methods for measurement of organic compounds at ultra-trace level: analytical criteria and application to analysis of amino acids in extraterrestrial samples
    O Vandenabeele-Trambouze
    Organisation Moleculaire, evolution et materiaux fluores, UMR CNRS 5073, Universite Montpellier II, Montpellier, 2 Place E Batallion 34195 Montpellier Cedex 5, France
    Astrobiology 5:48-65. 2005
    ..We emphasize the need to standardize the description of future analyses, and take the first step toward a proposed international laboratory network for performance testing...
  35. ncbi Delivery of extraterrestrial amino acids to the primitive Earth. Exposure experiments in Earth orbit
    B Barbier
    Centre de Biophysique Moleculaire, CNRS, Orleans, France
    Biol Sci Space 12:92-5. 1998
    ..The results obtained in BIOPAN-1 and BIOPAN-2 exposure experiments on board unmanned satellite FOTON are presented...
  36. ncbi [Meteoritics and mineralogy on possible ancient Martian life]
    A Tsuchiyama
    Department of Earth and Space Science, Osaka University, Japan
    Biol Sci Space 10:262-70. 1996
    ..1996) is controversial, and could be formed by non-biogenic processes. Thus, further study of ALH84001 and other martian meteorites is required. We also need to consider the future Mars mission especially sample return mission...
  37. ncbi Planetary interchange of bioactive material: probability factors and implications
    B C Clark
    Lockheed Martin Astronautics, POB 179, Denver, CO 80201, USA
    Orig Life Evol Biosph 31:185-97. 2001
    ..PIBM considerations apply to both the solar system locale(s) of the origin of life and to the applicability of planetary protection protocols to preserve the biospheres of planetary bodies, including our own...
  38. ncbi 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...
  39. ncbi Possible cometary origin of heavy noble gases in the atmospheres of Venus, Earth and Mars
    T Owen
    University of Hawaii, Institute for Astronomy, Honolulu 96822
    Nature 358:43-6. 1992
    ..If true, this hypothesis illustrates the importance of impacts in determining the volatile inventories of these planets...
  40. ncbi Collisional erosion and the non-chondritic composition of the terrestrial planets
    Hugh St C O'Neill
    Research School of Earth Sciences, Australian National University, Canberra, ACT 0200, Australia
    Philos Trans A Math Phys Eng Sci 366:4205-38. 2008
    ..But the lower radiogenic heat production exacerbates the discrepancy with heat loss...
  41. ncbi 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...
  42. ncbi Origin of Saturn's rings and inner moons by mass removal from a lost Titan-sized satellite
    Robin M Canup
    Planetary Science Directorate, Southwest Research Institute, 1050 Walnut Street, Suite 300, Boulder, Colorado 80302, USA
    Nature 468:943-26. 2010
    ..water ice, which implies that initially they were almost pure ice because they are continually polluted by rocky meteoroids. In contrast, a half-rock, half-ice mixture (similar to the composition of many of the satellites in the outer ..
  43. ncbi Planetary resources and astroecology. Planetary microcosm models of asteroid and meteorite interiors: electrolyte solutions and microbial growth--implications for space populations and panspermia
    Michael N Mautner
    Soil, Plant and Ecological Sciences Division, Lincoln University, Lincoln, New Zealand
    Astrobiology 2:59-76. 2002
    ..The results also suggest that protoplanetary nebulae can support and disperse microorganisms and can be therefore effective environments for natural and directed panspermia...
  44. ncbi Meteorites: messengers from the early solar system
    Beda A Hofmann
    Natural History Museum Bern, Earth Science Department Bern
    Chimia (Aarau) 64:736-40. 2010
    ..The present high find rate likely represents a unique short-term event, asking for a careful management of this scarce scientific resource...
  45. ncbi Chemical evolution of primitive solar system bodies
    J Oro
    Department of Biochemical and Biophysical Sciences, The University of Houston, TX 77004
    Adv Space Res 9:105-20. 1989
    ..Some of the outstanding problems concerning the synthesis of organic molecules on different cosmic bodies are also discussed from an exobiological perspective...
  46. pmc A unique basaltic micrometeorite expands the inventory of solar system planetary crusts
    Matthieu Gounelle
    , , , CP52, 57 rue Cuvier, 75005 Paris, France
    Proc Natl Acad Sci U S A 106:6904-9. 2009
    ..The ability to retrieve such a wealth of information from this tiny (a few micrograms) sample is auspicious some years before the launch of a Mars sample return mission...
  47. ncbi Meteorite Kr in Earth's Mantle Suggests a Late Accretionary Source for the Atmosphere
    Greg Holland
    School of Earth, Atmospheric, and Environmental Sciences, University of Manchester, Oxford Road, Manchester M13 9PL, UK
    Science 326:1522-5. 2009
    ....
  48. ncbi Composition of the Earth's interior: the importance of early events
    Richard W Carlson
    Department of Terrestrial Magnetism, Carnegie Institution of Washington, Washington, DC 20015, USA
    Philos Trans A Math Phys Eng Sci 366:4077-103. 2008
    ..The enriched reservoir may now be confined to the base of the mantle owing to a combination of compositionally induced high density and low viscosity, both of which allow only minimal entrainment into the overlying convecting mantle...
  49. ncbi Volatiles in interplanetary dust particles: a review
    E K Gibson
    Planetary Science Branch, NASA Johnson Space Center, Houston, Texas
    J Geophys Res 97:3865-75. 1992
    ..Recovery and analysis of interplanetary dust particles have opened new opportunities for analysis of primitive materials, although interplanetary dust particles represent major challenges to the analyst because of their small size...
  50. ncbi Conversations: with Carl Pilcher [interview by Johan Benson]
    C Pilcher
    NASA Headquarters, Washington, DC, USA
    Aerosp Am 36:16-8. 1998
    ..cooperation with the Japanese space agency, the status of the search for extraterrestrial life in solar system meteoroids and asteroids, mission size for more in-depth exploration, reports of water on the moon, and the exploration of ..
  51. ncbi Formation of uracil from the ultraviolet photo-irradiation of pyrimidine in pure H2O ices
    Michel Nuevo
    NASA Ames Research Center, Space Science Division, Moffett Field, California 94035, USA
    Astrobiology 9:683-95. 2009
    ....
  52. ncbi Heterogeneous accretion and the moderately volatile element budget of Earth
    M Schönbächler
    School of Earth, Atmospheric and Environmental Sciences, University of Manchester, Manchester M13 9PL, UK
    Science 328:884-7. 2010
    ..The Moon-forming giant impact probably involved the collision with a Mars-like protoplanet that had an oxidized mantle, enriched in moderately volatile elements...
  53. ncbi Extraterrestrial flux of potentially prebiotic C, N, and P to the early Earth
    Matthew Pasek
    NAI LaPlace, University of Arizona, 1629 E University Blvd, Tucson, AZ 85721, USA
    Orig Life Evol Biosph 38:5-21. 2008
    ..These results help elucidate the potential role of extraterrestrial matter in the origin of life...
  54. ncbi Are some chondrule rims formed by impact processes? Observations and experiments
    T E Bunch
    NASA Ames Research Center, Moffett Field, California 94035, USA
    Icarus 91:76-92. 1991
    ..Therefore, experiments using appropriately chosen projectile and target materials can provide a test of the hypothesis that chondrule rims common to Weston and possibly other ordinary chondrites were formed by such a process...
  55. ncbi The fate of amino acids during simulated meteoritic impact
    Marylène Bertrand
    Centre de Biophysique Moléculaire CNRS affiliated with the University of Orléans, 45071 Orleans, France
    Astrobiology 9:943-51. 2009
    ..Some chiral amino acids experienced partial racemization during the course of the experiment. Our data indicate that impact shock may act as a selective filter to the delivery of extraterrestrial amino acids via carbonaceous chondrites...
  56. ncbi Survival of microorganisms in space protected by meteorite material: results of the experiment 'EXOBIOLOGIE' of the PERSEUS mission
    P Rettberg
    DLR, Institute of Aerospace Medicine, Koln, Germany
    Adv Space Res 30:1539-45. 2002
    ....
  57. ncbi Photometric behavior of comet Hale-Bopp (C/1995 O1) before perihelion
    D G Schleicher
    Lowell Observatory, 1400 West Mars Hill Road, Flagstaff, AZ 86001, USA
    Science 275:1913-5. 1997
    ..The chemical composition of Hale-Bopp is consistent with that of other long-period comets originating from the Oort Cloud...
  58. ncbi Spherule beds 3.47-3.24 billion years old in the Barberton Greenstone Belt, South Africa: a record of large meteorite impacts and their influence on early crustal and biological evolution
    Donald R Lowe
    Department of Geological and Environmental Sciences, Stanford University, Stanford, California 94305 2115, USA
    Astrobiology 3:7-48. 2003
    ..26-3.24 Ga and approximately 2.65-2.5 Ga suggests either spikes in impact rates during the Archean or that the entire Archean was characterized by terrestrial impact rates above those currently estimated from the lunar cratering record...
  59. pmc Chondrites isp. indicating late paleozoic atmospheric anoxia in Eastern Peninsular India
    Biplab Bhattacharya
    Department of Earth Sciences, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
    ScientificWorldJournal 2014:434672. 2014
    ..Such anoxia is interpreted as intermittent falls in oxygen level in an overall decreasing atmospheric oxygenation within the late Paleozoic global oxygen-carbon dioxide fluctuations...
  60. ncbi Chemical evolution and meteorites: an update
    Sandra Pizzarello
    Arizona State University, Tempe, AZ 85287, USA
    Orig Life Evol Biosph 34:25-34. 2004
    ....
  61. ncbi Hot tempers, hard core
    Rex Dalton
    Nature 425:13-4. 2003
  62. ncbi Spectroscopic identification of carbonate minerals in the martian dust
    Joshua L Bandfield
    Department of Geological Sciences, Arizona State University, Tempe, AZ 85287 6305, USA
    Science 301:1084-7. 2003
    ....
  63. ncbi Geochemical evidence for magmatic water within Mars from pyroxenes in the Shergotty meteorite
    H Y McSween
    Department of Geological Sciences, University of Tennessee, Knoxville 37996, USA
    Nature 409:487-90. 2001
    ..We conclude that ascending magmas possibly delivered significant quantities of water to the martian surface in recent times, reconciling geologic and petrologic constraints on the outgassing history of Mars...
  64. ncbi Chicxulub and climate: radiative perturbations of impact-produced S-bearing gases
    Elisabetta Pierazzo
    Planetary Science Institute, Tucson, Arizona 85705 8331, USA
    Astrobiology 3:99-118. 2003
    ....
  65. pmc L-amino acids catalyze the formation of an excess of D-glyceraldehyde, and thus of other D sugars, under credible prebiotic conditions
    Ronald Breslow
    Department of Chemistry, Columbia University, New York, NY 10027, USA
    Proc Natl Acad Sci U S A 107:5723-5. 2010
    ..The D/L glyceraldehyde ratio in water solution is amplified to 92/8 using simple selective solubilities of the D and the DL forms. This D center would then be carried into the prebiotic syntheses of larger sugars...
  66. ncbi Amino acid distribution in meteorites: diagenesis, extraction methods, and standard metrics in the search for extraterrestrial biosignatures
    Gene D McDonald
    Department of Chemistry and Biochemistry, University of Texas at Austin, Austin, Texas, USA
    Astrobiology 6:17-33. 2006
    ..We present here one such metric determined by sequential feature extraction and normalization (PCA), information-driven automated exploration of classification possibilities (HCA), and prediction of classification accuracy (ANNs)...
  67. ncbi Soil moisture retrieval from optical and thermal spaceborne remote sensing
    W W Verstraeten
    Laboratory of Soil and Water Management, Katholieke Universiteit Leuven, Belgium
    Commun Agric Appl Biol Sci 70:27-30. 2005
  68. ncbi Asteroidal water within fluid inclusion-bearing halite in an H5 chondrite, Monahans (1998)
    M E Zolensky
    Mail Code SN2, NASA Johnson Space Center, Houston, TX 77058, USA
    Science 285:1377-9. 1999
    ..Two possible origins for the brines are indigenous fluids flowing within the asteroid and exogenous fluids delivered into the asteroid surface from a salt-containing icy object...
  69. ncbi A reduced estimate of the number of kilometre-sized near-Earth asteroids
    D Rabinowitz
    Yale University Physics Department, New Haven, Connecticut 06511, USA
    Nature 403:165-6. 2000
    ..We find that the total number of asteroids with diameters > 1 km is about half the earlier estimates. At the current rate of discovery of near-Earth asteroids, 90% will probably have been detected within the next 20 years...
  70. pmc The missing organic molecules on Mars
    S A Benner
    Departments of Chemistry, Anatomy, and Cell Biology, University of Florida, Gainesville, FL 32611, USA
    Proc Natl Acad Sci U S A 97:2425-30. 2000
    ..Missions should seek these and recognize that these complicate the search for organics from entirely hypothetical Martian life...
  71. ncbi The PROCESS experiment: exposure of amino acids in the EXPOSE-E experiment on the international space station and in laboratory simulations
    M Bertrand
    Centre de Biophysique Moleculaire, CNRS, rue Charles Sadron, Orleans cedex 2, France
    Astrobiology 12:426-35. 2012
    ..Our results also demonstrate the protective effect of meteorite powder, which reemphasizes the importance of exogenic contribution to the inventory of prebiotic organics on early Earth...
  72. doi Hydrogen isotopes in lunar volcanic glasses and melt inclusions reveal a carbonaceous chondrite heritage
    Alberto E Saal
    Department of Geological Sciences, Brown University, Providence, RI 02912, USA
    Science 340:1317-20. 2013
    ....
  73. pmc Evidence for supernova injection into the solar nebula and the decoupling of r-process nucleosynthesis
    Gregory A Brennecka
    Lawrence Livermore National Laboratory, Livermore, CA 94550
    Proc Natl Acad Sci U S A 110:17241-6. 2013
    ..A scenario of late supernova injection into the protoplanetary disk is consistent with formation of our Solar System in an active star-forming region of the galaxy. ..
  74. ncbi Vibrational spectroscopy of ion-irradiated ices
    G Strazzulla
    Osservatorio Astrofisico di Catania, Italy
    Spectrochim Acta A Mol Biomol Spectrosc 57:825-42. 2001
    ..Furthermore we present the micro-Raman spectra of some fragments of Orgueil a carbonaceous chondrite meteorite. Some astrophysical applications of these laboratory results are also discussed...
  75. ncbi Evidence against a chondritic Earth
    Ian H Campbell
    Research School of Earth Science, Australian National University, Canberra, Australian Capital Territory 0200, Australia
    Nature 483:553-8. 2012
    ..Either the matter from which the Earth formed was not chondritic, or the Earth has lost matter by collisional erosion in the later stages of planet formation...
  76. pmc Large enantiomeric excesses in primitive meteorites and the diverse effects of water in cosmochemical evolution
    Sandra Pizzarello
    Arizona State University, Department of Chemistry and Biochemistry, Tempe, AZ 85287 1604, USA
    Proc Natl Acad Sci U S A 109:11949-54. 2012
    ..However, aqueous alteration appears to affect CR soluble organic composition and abundances, in particular some diastereomeric amino acids may gauge its extent by the consequent racemization of their ee...
  77. ncbi Planetary science. A unique chunk of the Moon
    Randy L Korotev
    Department of Earth and Planetary Sciences, Washington University in St Louis, St Louis, MO 63130, USA
    Science 305:622-3. 2004
  78. pmc The first living systems: a bioenergetic perspective
    D W Deamer
    Department of Chemistry and Biochemistry, University of California, Santa Cruz 95064, USA
    Microbiol Mol Biol Rev 61:239-61. 1997
    ..Despite this progress, there is still no clear mechanism by which the free energy of light, ion gradients, or redox potential can be coupled to polymer bond formation in a protocellular structure...
  79. doi Observations of ejecta clouds produced by impacts onto Saturn's rings
    Matthew S Tiscareno
    Center for Radiophysics and Space Research, Cornell University, Ithaca, NY 14853, USA
    Science 340:460-4. 2013
    ..The responsible interplanetary meteoroids were initially between 1 centimeter and several meters in size, and their influx rate is consistent with the ..
  80. ncbi The origin of the Earth
    S R Taylor
    Department of Nuclear Physics, Australian National University, Canberra, Australia
    AGSO J Aust Geol Geophys 17:27-31. 1997
    ..The strange density and chemistry of the Moon are consistent with an origin from the mantle of the impactor. Core-mantle separation on the Earth was coeval with accretion. Some speculations are given on the origin of the hydrosphere...
  81. ncbi Catalytic effects of Murchison material: prebiotic synthesis and degradation of RNA precursors
    Raffaele Saladino
    Department of Agrobiology and Agrochemistry, University of Tuscia, Viterbo, Italy
    Orig Life Evol Biosph 41:437-51. 2011
    ..These results suggest that if RNA was somehow incorporated into a primitive form of RNA-based thermophilic life, either it must be protected from random hydrolytic events, or the rate of synthesis must exceed the rate of hydrolysis...
  82. ncbi Conception of the 'Chirality-Experiment' on ESA's mission ROSETTA to comet P46/Wirtanen
    W H Thiemann
    Dept. Phys. Chemistry, University of Bremen, Leobenerstrasse, D-28359 Bremen, Germany
    Adv Space Res 27:323-8. 2001
    ..As a consequence of COSAC's 'Chirality-Experiment' far-reaching results are expected to investigate the various hypotheses about the first asymmetric synthesis...
  83. ncbi Amino acids from ultraviolet irradiation of interstellar ice analogues
    G M Munoz Caro
    Raymond and Beverly Sackler Laboratory for Astrophysics at Leiden Observatory, PO Box 9513, NL 2300 RA Leiden, The Netherlands
    Nature 416:403-6. 2002
    ....
  84. ncbi Lunar polar ice deposits: scientific and utilization objectives of the Lunar Ice Discovery Mission proposal
    Michael B Duke
    Lunar and Planetary Institute, Houston, Texas 77058, USA
    Acta Astronaut 50:379-83. 2002
    ..The lunar polar rover remains the best way to understand the distribution and characteristics of lunar polar ice...
  85. ncbi Dark matter in the outer solar system
    T Owen
    University of Hawaii Institute for Astronomy, Honolulu 96822, USA
    Adv Space Res 16:41-9. 1995
    ..Three absorptions in the spectrum of the unusually red planetesimal 5145 Pholus are well-established, but their identity remains a mystery...
  86. ncbi Kinetic studies of atmospherically relevant silicon chemistry. Part III: Reactions of Si+ and SiO+ with O3, and Si+ with O2
    Juan C Gómez Martín
    School of Chemistry, University of Leeds, LS2 9JT, UK
    Phys Chem Chem Phys 13:3764-74. 2011
    ..ions are generated in the Earth's upper atmosphere by hyperthermal collisions of material ablated from incoming meteoroids with atmospheric molecules, and from charge transfer of silicon-bearing neutral species with major atmospheric ..
  87. ncbi Indication of global deforestation at the Cretaceous-Tertiary boundary by New Zealand fern spike
    V Vajda
    Department of Geology, Lund University, Tornavägen 13, SE 223 63 Lund, Sweden
    Science 294:1700-2. 2001
    ..Recovery of New Zealand plant communities followed a pattern consistent with major climatic perturbations occurring after an impact winter that was possibly preceded by global wildfires...
  88. ncbi Non-racemic amino acids in the Murray and Murchison meteorites
    S Pizzarello
    Department of Chemistry and Biochemistry, Arizona State University, Tempe 85287 1604, USA
    Geochim Cosmochim Acta 64:329-38. 2000
    ....
  89. ncbi Life in the solar system
    A Brack
    Centre de Biophysique Moleculaire, CNRS, Orleans, France
    Adv Space Res 24:417-33. 1999
    ..One-handed complex molecules and preferential isotopic fractionation of carbon, common to all terrestrial life forms, can be used as basic indicators when searching for life beyond the Earth...
  90. ncbi Epitaxial growth of nanophase magnetite in Martian meteorite Allan Hills 84001: implications for biogenic mineralization
    J P Bradley
    MVA Inc, Norcross, Georgia 30093, USA
    Meteorit Planet Sci 33:765-73. 1998
    ....
  91. ncbi Raman spectroscopic study of four Spanish shocked ordinary chondrites: Cañellas, Olmedilla de Alarcón, Reliegos and Olivenza
    F Rull
    Unidad Asociada UVA CSIC, Edificio INDITI, Parque Tecnologico de Boecillo, 47152 Boecillo, Valladolid, Spain
    Philos Trans A Math Phys Eng Sci 368:3153-66. 2010
    ..However, the full spectral band width of the silicate internal modes shows some dependence on the impact grade, which could be attributed to inhomogeneous effects produced by the impacts...
  92. ncbi Carbonates in fractures of Martian meteorite Allan Hills 84001: petrologic evidence for impact origin
    E R Scott
    Hawai i Institute of Geophysics and Planetology, University of Hawai i at Manoa, Honolulu 96822, USA
    Meteorit Planet Sci 33:709-19. 1998
    ..Carbonates in fractures, which include those studied by McKay et al. (1996), could not have formed at low temperatures and preserved mineralogical evidence for Martian organisms...
  93. pmc Nanodiamonds do not provide unique evidence for a Younger Dryas impact
    H Tian
    Electron Microscopy for Materials Science EMAT, Department of Physics, University of Antwerp, Groenenborgerlaan 171, B 2020 Antwerp, Belgium
    Proc Natl Acad Sci U S A 108:40-4. 2011
    ..The combination of these characteristics does not yield unique evidence for an exogenic impact related to the investigated layer...
  94. ncbi Biological potential of extraterrestrial materials. 2. Microbial and plant responses to nutrients in the Murchison carbonaceous meteorite
    M N Mautner
    Space Bioresources Laboratory, Department of Soil Science, Lincoln University, New Zealand
    Icarus 129:245-53. 1997
    ..The results also suggest that carbonaceous asteroid resources can sustain soil microbial activity and provide essential macronutrients for future space-based ecosystems...
  95. ncbi The delivery of organic matter from asteroids and comets to the early surface of Mars
    G J Flynn
    Dept of Physics, SUNY Plattsburgh, NY 12901, USA
    Earth Moon Planets 72:469-74. 1996
    ..Interplanetary dust is shown to deliver an order-of-magnitude higher surface concentration of carbon onto Mars than onto Earth, suggesting interplanetary dust may be an important source of carbon on Mars as well...
  96. ncbi Carbonaceous materials in cometary environments: the case of the 3-4 micrometers bands
    L Colangeli
    Dipartimento di Ingegneria Industriale, University of Cassino, Italy
    Adv Space Res 12:43-6. 1992
    ..All these materials show significant features in the near IR region; however, only the synthetic spectra obtained from HAC grains show a satisfactory agreement with the profile of the cometary bands...
  97. ncbi Active methylotrophs in the sediments of Lonar Lake, a saline and alkaline ecosystem formed by meteor impact
    Chakkiath Paul Antony
    Microbial Culture Collection, National Centre for Cell Science, Pune, India
    ISME J 4:1470-80. 2010
    ..This study represents an essential first step towards understanding the relevance of methylotrophy in the soda lake sediments of an unusual impact crater structure...
  98. ncbi Interstellar chemistry recorded in organic matter from primitive meteorites
    Henner Busemann
    Department of Terrestrial Magnetism, Carnegie Institution of Washington, 5241 Broad Branch Road, NW, Washington, DC 20015, USA
    Science 312:727-30. 2006
    ..Hence, both meteorites (originating from the asteroid belt) and interplanetary dust particles (possibly from comets) preserve primitive organics that were a component of the original building blocks of the solar system...
  99. ncbi Analyzing a comet nucleus by capillary GC
    Robert Sternberg
    University of Paris 12 Vale de Marne, France
    Anal Chem 74:481A-487A. 2002
  100. ncbi Incipient space weathering observed on the surface of Itokawa dust particles
    T Noguchi
    College of Science, Ibaraki University, 2 1 1 Bunkyo, Mito, Ibaraki 310 8512, Japan
    Science 333:1121-5. 2011
    ..Sulfur-free Fe-rich nanoparticles exist deeper inside (<60 nanometers) ferromagnesian silicates. Their texture suggests formation by metamictization and in situ reduction of Fe(2+)...
  101. ncbi Paleontology. Reversals reveal pitfalls in spotting ancient and E.T. life
    Richard A Kerr
    Science 296:1384-5. 2002

Research Grants2

  1. BIOCHEMICAL MODEL REACTIONS
    Ronald Breslow; Fiscal Year: 2007
    ..In addition, both parts of the project will help us understand natural enzymes. [unreadable] [unreadable]..
  2. Ultrapid DNA Sequencing by a Nanopore Instrument
    David Deamer; Fiscal Year: 2005
    ..abstract_text> ..