Solar System Exploration Division

Daniel P Glavin (he/him)

(Senior Scientist)

Daniel P Glavin (he/him)'s Contact Card & Information.
Email: daniel.p.glavin@nasa.gov
Phone: 301.614.6361
Org Code: 690
Address:
NASA/GSFC
Mail Code 690
Greenbelt, MD 20771
Employer:
NASA

Current Projects


Mars Sample Return (MSR)

Mars

Dr. Glavin is the Senior Scientist for Sample Return in the Solar System Exploration Division at NASA Goddard Space Flight Center and is supporting the MSR Program Science Office with all issues dealing with the scientific integrity of the returned samples. He is also a member of the MSR Capture, Containment and Return System (CCRS) team that will capture the sample cache in Mars orbit and return it to Earth as early as 2033.


Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS-REx)

Asteroids

Dr. Glavin is a Co-Investigator on the OSIRIS-REx asteroid sample return mission and is leading the Sample Organics Analysis Working Group team that will investigate the organic composition of the samples that will be returned to Earth from asteroid Bennu in 2023.


Mars Science Laboratory (MSL)

Mars

Dr. Glavin is a member of the MSL science team and participates in gas chromatography mass spectrometry data analysis from the Sample Analysis at Mars (SAM) instrument which has detected evidence of organic compounds in drilled samples collected by the Curiosity rover in Gale Crater.

Brief Bio


Astrobiologist Dr. Danny Glavin looks for the building blocks of life in extraterrestrial materials, including meteorites, asteroids, comets and other interplanetary dust particles.

He earned a B.S in physics from the University of California at San Diego in 1996 and a Ph.D. in earth sciences from the Scripps Institution of Oceanography in 2001. After receiving his Ph.D., Dr. Glavin continued to study meteorites as a postdoctoral researcher at the Max Planck Institute (MPI) for Chemistry in Mainz, Germany. He joined the 2002-2003 Antarctic Search for Meteorites (ANSMET) team and spent six weeks searching for meteorites in Antarctica at Goodwin Nunataks and MacAlpine Hills.

In 2003, Dr. Glavin joined the NASA Goddard Space Flight Center in Greenbelt, Maryland. In 2004, he co-founded the Astrobiology Analytical Laboratory at NASA Goddard which specializes in the analysis of extraterrestrial amino acids and other organic compounds important to life in meteorites, lunar samples and samples returned from asteroids and comets. Dr. Glavin is a Co-Investigator on the OSIRIS-REx asteroid sample return mission. He was selected to be a Participating Scientist on the Mars Science Laboratory (MSL) mission in 2011 and was part of the team that discovered the first evidence of indigenous organic compounds on Mars using the Sample Analysis at Mars (SAM) instrument. Dr. Glavin is a Co-Investigator on the Mars Organic Molecule Analyzer (MOMA) instrument on the ExoMars rover and is a member of the NASA Mars 2020 rover Standing Review Board.  He became NASA Goddard’s Associate Director for Strategic Science in the Solar System Exploration Division in 2014.

In recognition of Dr. Glavin’s meteorite research, the International Astronomical Union named an asteroid after him, asteroid (24480) Glavin. He was awarded the Antarctica Service Medal of the United States (2003), the Meteoritical Society’s Nier Prize (2010), the NASA Goddard Internal Research and Development Innovator of the Year Award (2007), and the NASA Robert H. Goddard Exceptional Achievement Award for Science (2009 and 2014).

Dr. Glavin’s research was featured on National Public Radio, PBS NOVA and the Discovery Channel and in several books including Marc Kaufman’s "First Contact: Scientific Breakthroughs in the Hunt for Life Beyond Earth" and "Mars Up Close." Dr. Glavin's first book is entitled "Frozen in Time: Hunting Meteorites in Antarctica for Signs of Life" (2019, Olympia Publishers, London, 340 pp.). He lives with his wife and two children in Maryland.

Positions/Employment


Associate Director for Strategic Science, Solar System Exploration Division

NASA Goddard Space Flight Center - Greenbelt, MD

May 2014 - April 2023


Associate Chief, Planetary Environments Laboratory

NASA Goddard Space Flight Center - Greenbelt, MD

April 2010 - April 2011



Research Scientist

NASA Goddard Space Flight Center - Greenbelt, MD

November 2003 - Present



Senior Scientist for Sample Return

NASA Goddard Space Flight Center - Greenbelt, Maryland

April 2023 - Present

Education


B.S. (Physics - 1996) University of California, San Diego (UCSD), Graduated with honors
Ph.D. (Earth Sciences - 2001) Scripps Institution of Oceanography, UCSD

Professional Societies


The International Society for the Study of the Origin of Life

1996 - Present


The Meteoritical Society

2000 - Present

Awards


The Meteoritical Society, Nier Prize (2010)
NASA Robert H. Goddard Exceptional Achievement Award-Science (2009, 2014)
NASA GSFC Internal Research and Development Innovator of the Year Award (2007)

 

Special Experience


SCUBA certified and an Instrument rated pilot

Publications


Refereed

2024. "Enantioselective three-dimensional high-performance liquid chromatographic determination of amino acids in the Hayabusa2 returned samples from the asteroid Ryugu." Journal of Chromatography Open 5 100134 [10.1016/j.jcoa.2024.100134] [Journal Article/Letter]

2024. "The planetary protection strategy of Mars Sample Return’s Earth Return Orbiter mission." Journal of Space Safety Engineering [10.1016/j.jsse.2024.04.013] [Journal Article/Letter]

2024. "Molecular distribution and ¹³C isotope composition of volatile organic compounds in the Murchison and Sutter's Mill carbonaceous chondrites." Meteoritics and Planetary Science 59 (2): 286-300 [10.1111/maps.14118] [Journal Article/Letter]

2023. "Polycyclic aromatic hydrocarbons in samples of Ryugu formed in the interstellar medium." Science 382 (6677): 1411-1416 [10.1126/science.adg6304] [Journal Article/Letter]

2023. "Investigating the impact of x‐ray computed tomography imaging on soluble organic matter in the Murchison meteorite: Implications for Bennu sample analyses." Meteoritics and Planetary Science [10.1111/maps.14111] [Journal Article/Letter]

2023. "The nature of insoluble organic matter in Sutter's Mill and Murchison carbonaceous chondrites: Testing the effect of x‐ray computed tomography and exploring parent body organic molecular evolution." Meteoritics and Planetary Science [10.1111/maps.14096] [Journal Article/Letter]

2023. "Murchison Meteorite Analysis using Tetramethylammonium Hydroxide (TMAH) Thermochemolysis under Simulated Sample Analysis at Mars (SAM) Pyrolysis-Gas Chromatography-Mass Spectrometry Conditions." Journal of Geophysical Research - Planets 128 (11): e2023JE007968 [Full Text] [10.1029/2023JE007968] [Journal Article/Letter]

2023. "Soluble organic matter Molecular atlas of Ryugu reveals cold hydrothermalism on C-type asteroid parent body." Nature Communications 14 (1): 6525 [Full Text] [10.1038/s41467-023-42075-y] [Journal Article/Letter]

2023. "Chemical evolution of primordial salts and organic sulfur molecules in the asteroid 162173 Ryugu." Nature Communications 14 (1): 5284 [10.1038/s41467-023-40871-0] [Journal Article/Letter]

2023. "The spatial distribution of soluble organic matter and their relationship to minerals in the asteroid (162173) Ryugu." Earth, Planets and Space 75 (1): 73 [10.1186/s40623-023-01792-w] [Journal Article/Letter]

2023. "Uracil in the carbonaceous asteroid (162173) Ryugu." Nature Communications 14 (1): 1292 [Full Text] [10.1038/s41467-023-36904-3] [Journal Article/Letter]

2023. "PAHs, hydrocarbons, and dimethylsulfides in Asteroid Ryugu samples A0106 and C0107 and the Orgueil (CI1) meteorite." Earth, Planets and Space 75 (1): 28 [Full Text] [10.1186/s40623-022-01758-4] [Journal Article/Letter]

2023. "Extraterrestrial Amino Acids and Amines Identified in Asteroid Ryugu Samples Returned by the Hayabusa2 Mission." Geochimica et Cosmochimica Acta 347 42-57 [Full Text] [10.1016/j.gca.2023.02.017] [Journal Article/Letter]

2023. "Soluble organic molecules in samples of the carbonaceous asteroid (162173) Ryugu." Science 379 (6634): eabn9033 [Full Text] [10.1126/science.abn9033] [Journal Article/Letter]

2023. "Meteorite Parent Body Aqueous Alteration Simulations of Interstellar Residue Analogs." ACS Earth and Space Chemistry 7 (1): 156-167 [Full Text] [10.1021/acsearthspacechem.2c00274] [Journal Article/Letter]

2022. "Rapid Radiolytic Degradation of Amino Acids in the Martian Shallow Subsurface: Implications for the Search for Extinct Life." Astrobiology 22 (9): 1099-1115 [Full Text] [10.1089/ast.2021.0166] [Journal Article/Letter]

2022. "Compact Non-Dispersive Infrared Gas Analyzer." U.S. Patent 11,391,672. Washington DC: U.S. Patent and Trademark Office July 19th 2022 [Other]

2022. "A parallel readout circuit for a space-based non-dispersive infrared gas analyzer." Proc. SPIE 12121, Sensors and Systems for Space Applications XV [10.1117/12.2619116] [Proceedings]

2022. "Evolved gas analyses of sedimentary rocks from the Glen Torridon Clay-Bearing Unit, Gale crater, Mars: Results from the Mars Science Laboratory Sample Analysis at Mars Instrument Suite." Journal of Geophysical Research: Planets 127 (9): e2022JE007179 [10.1029/2022JE007179] [Journal Article/Letter]

2022. "Identifying the wide diversity of extraterrestrial purine and pyrimidine nucleobases in carbonaceous meteorites." Nature Communications 13 (1): 2008 [Full Text] [10.1038/s41467-022-29612-x] [Journal Article/Letter]

2022. "Thermopile bias method for low voltage infrared readout integrated circuits." U.S. Patent 11,293,809. Washington DC: U.S. Patent and Trademark Office issued April 5, 2022 [Other]

2022. "Non‐protein amino acids identified in carbon‐rich Hayabusa particles." Meteoritics & Planetary Science 57 (4): 776-793 [Full Text] [10.1111/maps.13794] [Journal Article/Letter]

2022. "Gas Analyzer for Monitoring H2O and CO2 Partial Pressures in Space Instrumentation." IEEE Sensors Journal 22 (1): 12576-12587 [10.1109/JSEN.2022.3177079] [Journal Article/Letter]

2021. "Organic molecules revealed in Mars’s Bagnold Dunes by Curiosity’s derivatization experiment ." Nature Astronomy 6 129-140 [Full Text] [10.1038/s41550-021-01507-9] [Journal Article/Letter]

2021. "Low total abundances and a predominance of n ‐ω‐amino acids in enstatite chondrites: Implications for thermal stability of amino acids in the inner solar system." Meteoritics & Planetary Science 56 (11): 2118–2127 [Full Text] [10.1111/maps.13757] [Journal Article/Letter]

2021. "Influence of calcium perchlorate on search for Martian organic compounds with MTBSTFA/DMF derivatization." Astrobiology [Full Text] [10.1089/ast.20] [Journal Article/Letter]

2021. "Composition of organics on asteroid (101955) Bennu." Astronomy & Astrophysics 653 L1 [Full Text] [10.1051/0004-6361/202141167] [Journal Article/Letter]

2021. "Extraterrestrial hydroxy amino acids in CM and CR carbonaceous chondrites." Meteoritics & Planetary Science 56 (6): 1005-1023 [Full Text] [10.1111/maps.13661] [Journal Article/Letter]

2021. "A review of Sample Analysis at Mars-Evolved Gas Analysis (SAM-EGA) laboratory analog work supporting the presence of perchlorates and chlorates in Gale crater, Mars." Minerals 11 (5): [Full Text] [10.3390/min11050475] [Journal Article/Letter]

2021. "The impact and recovery of asteroid 2018 LA." Meteoritics & Planetary Science 56 (4): 844–893 [Full Text] [10.1111/maps.13653] [Journal Article/Letter]

2021. "Amino acid abundances and compositions in iron and stony‐iron meteorites." Meteoritics & Planetary Science 56 (3): 586-600 [Full Text] [10.1111/maps.13638] [Journal Article/Letter]

2021. "Influence of Calcium Perchlorate on the Search for Organics on Mars with Tetramethylammonium Hydroxide Thermochemolysis." Astrobiology 21 (3): 279-297 [10.1089/ast.2020.2252] [Journal Article/Letter]

2020. "Analysis of amino acids, hydroxy acids, and amines in CR chondrites." Meteoritics & Planetary Science 55 (11): 2422-2439 [Full Text] [10.1111/maps.13586] [Journal Article/Letter]

2020. "Analysis of amino acids, hydroxy acids, and amines in CR chondrites." Meteoritics & Planetary Science [Full Text] [10.1111/maps.13586] [Journal Article/Letter]

2020. "Extraterrestrial hexamethylenetetramine in meteorites—a precursor of prebiotic chemistry in the inner solar system." Nature Communications 11 (1): 6243 [Full Text] [10.1038/s41467-020-20038-x] [Journal Article/Letter]

2020. "A Sensitive Quantitative Analysis of Abiotically Synthesized Short Homopeptides using Ultraperformance Liquid Chromatography and Time-of-Flight Mass Spectrometry." Journal of Chromatography A 461509 [Full Text] [10.1016/j.chroma.2020.461509] [Journal Article/Letter]

2020. "Bright carbonate veins on asteroid (101955) Bennu: Implications for aqueous alteration history." Science 370 eabc3557 [Full Text] [10.1126/science.abc3557] [Journal Article/Letter]

2020. "Abundant extraterrestrial amino acids in the primitive CM carbonaceous chondrite Asuka 12236." Meteoritics & Planetary Science 55 (9): 1979–2006 [Full Text] [10.1111/maps.13560] [Journal Article/Letter]

2020. "Returning Samples From Enceladus for Life Detection." Frontiers in Astronomy and Space Sciences 7 26 [10.3389/fspas.2020.00026] [Journal Article/Letter]

2020. "Airfall on Comet 67P/Churyumov–Gerasimenko." Icarus 354 114004 [Full Text] [10.1016/j.icarus.2020.114004] [Journal Article/Letter]

2020. "Extraterrestrial organic compounds and cyanide in the CM2 carbonaceous chondrites Aguas Zarcas and Murchison." Meteoritics & Planetary Science 55 (7): 1509-1524 [Full Text] [10.1111/maps.13531] [Journal Article/Letter]

2020. "Radiation-hard parallel readout circuit for low-frequency voltage signal measurements." Sensors and Systems for Space Applications XIII 11422 (1142205): [10.1117/12.2558117] [Proceedings]

2020. "The search for organic compounds with TMAH thermochemolysis: from Earth analyses to space exploration experiments." TrAC Trends in Analytical Chemistry 115896 [Full Text] [10.1016/j.trac.2020.115896] [Journal Article/Letter]

2020. "Extraterrestrial amino acids and L-enantiomeric excesses in the CM2 carbonaceous chondrites Aguas Zarcas and Murchison." Meteoritics & Planetary Science 56 (1): 148–173 [Full Text] [10.1111/maps.13451] [Journal Article/Letter]

2020. "First detections of dichlorobenzene isomers and trichloromethylpropane from organic matter indigenous to Mars mudstone in Gale Crater, Mars: Results from the Sample Analysis at Mars instrument onboard the Curiosity Rover." Astrobiology 20 (2): [Full Text] [10.1089/ast.2018.1908] [Journal Article/Letter]

2020. "Indigenous and exogenous organics and surface-atmosphere cycling inferred from carbon and oxygen isotopes at Gale crater." Nature Astronomy [Full Text] [10.1038/s41550-019-0990-x] [Journal Article/Letter]

2020. "Influence of perchlorate on the search for organics on Mars with TMAH thermochemolysis." Talanta [10.1016/j.talanta.2019.06.076] [Journal Article/Letter]

2020. "Surface temperature trends recorded in thiophene from two impact craters: Chicxulub (Earth) and Gale (Mars)." Advances in Astronomy [Journal Article/Letter]

2019. "Episodes of particle ejection from the surface of the active asteroid (101955) Bennu." Science 366 (6470): eaay3544 [Full Text] [10.1126/science.aay3544] [Journal Article/Letter]

2019. "The Search for Chiral Asymmetry as a Potential Biosignature in our Solar System." Chemical Reviews 120 4660−4689 [Full Text] [10.1021/acs.chemrev.9b00474] [Journal Article/Letter]

2019. "Extraterrestrial ribose and other sugars in primitive meteorites." Proceedings of the National Academy of Sciences 116 (49): 24440-24445 [Full Text] [10.1073/pnas.1907169116] [Journal Article/Letter]

2019. "Role of the Tenax® adsorbent in the interpretation of the EGA and GC‐MS analyses performed with the Sample Analysis at Mars in Gale crater." Journal of Geophysical Research: Planets 2019JE005973 [10.1029/2019je005973] [Journal Article/Letter]

2019. "Investigating the effects of gamma radiation on selected chemicals for use in biosignature detection instruments on the surface of Jupiter’s moon Europa." Planetary and Space Science 175 1-12 [Full Text] [10.1016/j.pss.2019.05.009] [Journal Article/Letter]

2019. "Application of TMAH thermochemolysis to the detection of nucleobases: application to the MOMA and SAM space experiment." Talanta 204 802-811 [Full Text] [10.1016/j.talanta.2019.06.076] [Journal Article/Letter]

2019. "Methodologies for Analyzing Soluble Organic Compounds in Extraterrestrial Samples: Amino Acids, Amines, Monocarboxylic Acids, Aldehydes, and Ketones." Life 9 (47): 30 pages [Full Text] [10.3390/life9020047] [Journal Article/Letter]

2019. "The CM carbonaceous chondrite regolith Diepenveen." Meteoritics & Planetary Science 54 (7): 1431–1461 [Full Text] [10.1111/maps.13297] [Journal Article/Letter]

2019. "Recovery of Fatty Acids from Mineralogic Mars Analogs by TMAH Thermochemolysis for the Sample Analysis at Mars Wet Chemistry Experiment on the Curiosity Rover." Astrobiology 19 (4): [Full Text] [10.1089/ast.2018.1819] [Journal Article/Letter]

2019. "The Sariçiçek howardite fall in Turkey: Source crater of HED meteorites on Vesta and impact risk of Vestoids." Meteoritics & Planetary Science 54 (5): 953-1008 [Full Text] [10.1111/maps.13258] [Journal Article/Letter]

2019. "The potential science and engineering value of samples delivered to Earth by Mars sample return." Meteoritics & Planetary Science 54 (3): 667-671 [10.1111/maps.13232] [Journal Article/Letter]

2018. "Abiotic input of fixed nitrogen by bolide impacts to Gale crater during the Hesperian. Insights from the Mars Science Laboratory." Journal of Geophysical Research-Planets [Full Text] [10.1029/2018JE005852] [Journal Article/Letter]

2018. "OSIRIS-REx Contamination Control Strategy and Implementation." Space Science Reviews 214 (1): 19 [Full Text] [10.1007/s11214-017-0439-4] [Journal Article/Letter]

2018. "Effect of polychromatic X-ray microtomography imaging on the amino acid content of the Murchison CM chondrite." Meteoritics & Planetary Science 54 (1): 220–228 [Full Text] [10.1111/maps.13188] [Journal Article/Letter]

2018. "The CAESAR New Frontiers Comet Sample Return Mission." Microscopy and Microanalysis 24 (S1): 2104-2105 [10.1017/s1431927618011005] [Journal Article/Letter]

2018. "The Origin and Evolution of Organic Matter in Carbonaceous Chondrites and Links to Their Parent Bodies." Primitive Meteorites and Asteroids 205-271 [Full Text] [10.1016/b978-0-12-813325-5.00003-3] [Article in Book]

2018. "Organic matter preserved in 3-billion-year-old mudstones at Gale crater, Mars." Science 360 (6393): 1096-1101 [Full Text] [10.1126/science.aas9185] [Journal Article/Letter]

2018. "Background levels of methane in Mars’ atmosphere show strong seasonal variations." Science 360 (6393): 1093-1096 [10.1126/science.aaq0131] [Journal Article/Letter]

2017. "Distribution of aliphatic amines in CO, CV, and CK carbonaceous chondrites and relation to mineralogy and processing history." Meteoritics & Planetary Science 52 (12): 2632–2646 [Full Text] [10.1111/maps.12959] [Journal Article/Letter]

2017. "Large sulfur isotope fractionations in Martian sediments at Gale crater." Nature Geoscience [10.1038/ngeo3002] [Journal Article/Letter]

2017. "Evolved Gas Analyses of Sedimentary Rocks and Eolian Sediment in Gale Crater, Mars: Results of the Curiosity Rover's Sample Analysis at Mars (SAM) Instrument from Yellowknife Bay to the Namib Dune." Journal of Geophysical Research: Planets 122 [10.1002/2016je005225] [Journal Article/Letter]

2017. "The Mars Organic Molecule Analyzer (MOMA) Instrument: Characterization of Organic Material in Martian Sediments." Astrobiology 17 (6-7): 655-685 [10.1089/ast.2016.1551] [Journal Article/Letter]

2017. "Pathways to Meteoritic Glycine and Methylamine." ACS Earth and Space Chemistry 1 (1): 3-13 [Full Text] [10.1021/acsearthspacechem.6b00014] [Journal Article/Letter]

2016. "In situ analysis of martian regolith with the SAM experiment during the first mars year of the MSL mission: Identification of organic molecules by gas chromatography from laboratory measurements." Planetary and Space Science 129 88-102 [10.1016/j.pss.2016.06.007] [Journal Article/Letter]

2016. "MOMA: the challenge to search for organics and biosignatures on Mars." International Journal of Astrobiology 15 (03): 239-250 [10.1017/s1473550416000227] [Journal Article/Letter]

2016. "Meteoritic Amino Acids: Diversity in Compositions Reflects Parent Body Histories." ACS Central Science 2 370-379 [Full Text] [10.1021/acscentsci.6b00074] [Journal Article/Letter]

2016. "Potential precursor compounds for chlorohydrocarbons detected in Gale Crater, Mars, by the SAM instrument suite on the Curiosity Rover." Journal of Geophysical Research: Planets 121 (3): 296-308 [10.1002/2015je004939] [Journal Article/Letter]

2016. "Evaluation of the robustness of chromatographic columns in a simulated highly radiative Jovian environment." Planetary and Space Science 122 38-45 [10.1016/j.pss.2016.01.004] [Journal Article/Letter]

2016. "Light and variable 37Cl/35Cl ratios in rocks from Gale Crater, Mars: Possible signature of perchlorate." Earth and Planetary Science Letters 438 14-24 [10.1016/j.epsl.2015.12.013] [Journal Article/Letter]

2016. "Effect of a synchrotron X-ray microtomography imaging experiment on the amino acid content of a CM chondrite." Meteoritics & Planetary Science 51 (2): 429-437 [Full Text] [10.1111/maps.12595] [Journal Article/Letter]

2016. "Magnesium sulfate as a key mineral for the detection of organic molecules on Mars using pyrolysis." Journal of Geophysical Research: Planets 121 (1): 61-74 [10.1002/2015je004884] [Journal Article/Letter]

2015. "Evaluation of the Tenax trap in the Sample Analysis at Mars instrument suite on the Curiosity rover as a potential hydrocarbon source for chlorinated organics detected in Gale Crater." Journal of Geophysical Research: Planets 120 (8): 1446-1459 [10.1002/2015je004825] [Journal Article/Letter]

2015. "Organic molecules in the Sheepbed Mudstone, Gale Crater, Mars." Journal of Geophysical Research: Planets 120 (3): 495-514 [Full Text] [10.1002/2014JE004737] [Journal Article/Letter]

2015. "OSIRIS-REx IS A PATHFINDER FOR CONTAMINATION CONTROL FOR COST CONTROLLED MISSIONS IN THE 21ST CENTURY." 46th Lunar and Planetary Science Conference (2015) 1147.pdf [Proceedings]

2015. "DISTRIBUTION AND ORIGIN OF AMINO ACIDS IN LUNAR REGOLITH SAMPLES." 46th Lunar and Planetary Science Conference (2015) [Proceedings]

2015. "Effect of a Routine Synchrotron X-Ray Microtomography Scan on the Amino Acid Content of the Murchison CM Chondrite." LPI Contributions 1856 5208- [Full Text] [Proceedings]

2015. "The OSIRIS-REx target asteroid (101955) Bennu: Constraints on its physical, geological, and dynamical nature from astronomical observations ." Meteoritics and Planetary Science 50 (4): 834-849 [Full Text] [10.1111/maps.12353] [Journal Article/Letter]

2015. "Amino acid analyses of R and CK chondrites." Meteoritics & Planetary Science 50 (3): 470-482 [Full Text] [10.1111/maps.12433] [Journal Article/Letter]

2015. "The imprint of atmospheric evolution in the D/H of Hesperian clay minerals on Mars." Science Vol 347 412-414 [[DOI:10.1126/science.1260291]] [Journal Article/Letter]

2015. "Evidence for indigenous nitrogen in sedimentary and aeolian deposits from the Curiosity rover investigations at Gale crater, Mars." Proceedings of National Academy of Science [10.1073/pnas.1420932112] [Journal Article/Letter]

2014. "The effects of parent-body hydrothermal heating on amino acid abundances in CI-like chondrites." Polar Science 8 (3): 255-263 [Full Text] [10.1016/j.polar.2014.05.002] [Journal Article/Letter]

2014. "Fall, recovery, and characterization of the Novato L6 chondrite breccia." Meteoritics & Planetary Science 49 (8): 1388–1425 [Full Text] [10.1111/maps.12323] [Journal Article/Letter]

2014. "Report of the workshop for life detection in samples from Mars." Life Sciences in Space Research 2 1-5 [10.1016/j.lssr.2014.05.001] [Journal Article/Letter]

2014. "Liquid chromatography-mass spectrometry interface for detection of extraterrestrial organics." 2014 IEEE Aerospace Conference [Full Text] [10.1109/aero.2014.6836328] [Proceedings]

2014. "The amino acid composition of the Sutter's Mill CM2 carbonaceous chondrite." Meteoritics & Planetary Science 49 (11): 2074-2086 [Full Text] [10.1111/maps.12281] [Journal Article/Letter]

2014. "Amino acid analysis in micrograms of meteorite sample by nanoliquid chromatography–high-resolution mass spectrometry." Journal of Chromatography A 1332 30-34 [Full Text] [10.1016/j.chroma.2014.01.032] [Journal Article/Letter]

2014. "Conducting Miller-Urey Experiments." Journal of Visualized Experiments 83 1-13 [Full Text] [10.3791/51039] [Journal Article/Letter]

2014. "Does aspartic acid racemization constrain the depth limit of the subsurface biosphere? ." Geobiology 12 (1): 1-19 [Journal Article/Letter]

2014. "Distribution of Amino Acids in Lunar Regolith." Lunar and Planetary Science Conference 45 1127- [Proceedings]

2014. "Origin of Chlorobenzene Detected by the Curiosity Rover in Yellowknife Bay: Evidence for Martian Organics in the Sheepbed Mudstone? ." MSL Science Team, Lunar and Planetary Science Conference 45 1157- [Proceedings]

2014. "The Effects of Thermal Metamorphism on the Amino Acid Content of the CI-Like Chondrite Y-86029 ." Lunar and Planetary Science Conference 45 1394- [Proceedings]

2014. "Evidence of Hydrothermal Organic Synthesis on Mars from Analysis of the Tissint Meteorite ." LPI Contributions 1800 5331- [Proceedings]

2014. "The OSIRIS-REx target asteroid (101955) Bennu: Constraints on its physical, geological, and dynamical nature from astronomical observations." Meteoritics & Planetary Science 50 (4): 834–849 [Full Text] [10.1111/maps.12353] [Journal Article/Letter]

2014. "The effects of parent-body hydrothermal heating on amino acid abundances in CI-like chondrites." Polar Science 8 255-263 [10.1016/j.polar.2014.05.002] [Journal Article/Letter]

2014. "Does aspartic acid racemization constrain the depth limit of the subsurface biosphere?." Geobiology 12 (1): 1-19 [10.1111/gbi.12069] [Journal Article/Letter]

2014. "A Plausible Simultaneous Synthesis of Amino Acids and Simple Peptides on the Primordial Earth." Angewandte Chemie International Edition 53 8132-81336 [Full Text] [10.1002/ange.201403683] [Journal Article/Letter]

2014. "Volatile and Organic Compositions of Sedimentary Rocks in Yellowknife Bay, Gale Crater, Mars." Science 343 6169 [doi:10.1126/science.1245267] [Journal Article/Letter]

2014. "Sulfur-bearing Phases Detected by Evolved Gas Analysis of the Rocknest Aeolian Deposit, Gale Crater." J. Geophys. Res. 119 373-393 [10.1002/2013JE004518] [Journal Article/Letter]

2014. "Abundances and Implications of Volatile-bearing Species from Evolved Gas Analysis of the Rocknest Aeolian Deposit, Gale Crater, Mars." Journal of Geophysical Research: Planets 119 237-254 [10.1002/2013JE004493] [Journal Article/Letter]

2013. "A Habitable Fluvio-Lacustrine Environment at Yellowknife Bay, Gale Crater, Mars." Science 343 (6169): 1242777-1242777 [10.1126/science.1242777] [Journal Article/Letter]

2013. "Mineralogy of a Mudstone at Yellowknife Bay, Gale Crater, Mars." Science 343 (6169): 1243480-1243480 [10.1126/science.1243480] [Journal Article/Letter]

2013. "Elemental Geochemistry of Sedimentary Rocks at Yellowknife Bay, Gale Crater, Mars." Science 343 (6169): 1244734-1244734 [10.1126/science.1244734] [Journal Article/Letter]

2013. "Mars' Surface Radiation Environment Measured with the Mars Science Laboratory's Curiosity Rover." Science 343 (6169): 1244797-1244797 [10.1126/science.1244797] [Journal Article/Letter]

2013. "Volatile and Organic Compositions of Sedimentary Rocks in Yellowknife Bay, Gale Crater, Mars." Science 343 (6169): 1245267-1245267 [10.1126/science.1245267] [Journal Article/Letter]

2013. "In Situ Radiometric and Exposure Age Dating of the Martian Surface." Science 343 (6169): 1247166-1247166 [10.1126/science.1247166] [Journal Article/Letter]

2013. "Does aspartic acid racemization constrain the depth limit of the subsurface biosphere?." Geobiology 12 (1): 1-19 [Full Text] [10.1111/gbi.12069] [Journal Article/Letter]

2013. "Evidence for perchlorates and the origin of chlorinated hydrocarbons detected by SAM at the Rocknest aeolian deposit in Gale Crater." Journal of Geophysical Research: Planets 118 (10): 1955-1973 [Full Text] [10.1002/jgre.20144] [Journal Article/Letter]

2013. "Soil Diversity and Hydration as Observed by ChemCam at Gale Crater, Mars." Science 341 (6153): 1238670-1238670 [10.1126/science.1238670] [Journal Article/Letter]

2013. "X-ray Diffraction Results from Mars Science Laboratory: Mineralogy of Rocknest at Gale Crater." Science 341 (6153): 1238932-1238932 [10.1126/science.1238932] [Journal Article/Letter]

2013. "Volatile, Isotope, and Organic Analysis of Martian Fines with the Mars Curiosity Rover." Science 341 (6153): 1238937-1238937 [10.1126/science.1238937] [Journal Article/Letter]

2013. "The Petrochemistry of Jake_M: A Martian Mugearite." Science 341 (6153): 1239463-1239463 [10.1126/science.1239463] [Journal Article/Letter]

2013. "Curiosity at Gale Crater, Mars: Characterization and Analysis of the Rocknest Sand Shadow." Science 341 (6153): 1239505-1239505 [10.1126/science.1239505] [Journal Article/Letter]

2013. "Abundance and Isotopic Composition of Gases in the Martian Atmosphere from the Curiosity Rover." Science 341 (6143): 263-266 [10.1126/science.1237966] [Journal Article/Letter]

2013. "Martian Fluvial Conglomerates at Gale Crater." Science 340 (6136): 1068-1072 [10.1126/science.1237317] [Journal Article/Letter]

2013. "Organics Analyzer for Sampling Icy Surfaces: a Liquid Chromatograph-Mass Spectrometer for Future in situ Small Body Missions." 2013 IEEE Aerospace Conference [Full Text] [10.1109/AERO.2013.6497391] [Journal Article/Letter]

2013. "A search for amino acids and nucleobases in the Martian meteorite Roberts Massif 04262 using liquid chromatography-mass spectrometry." Meteoritics & Planetary Science 48 (5): 786-795 [Full Text] [10.1111/maps.12103] [Journal Article/Letter]

2013. "Organics Analyzer for Sampling Icy Surfaces: A liquid chromatograph-mass spectrometer for future in situ small body missions." 2013 IEEE Aerospace Conference 331- [10.1109/aero.2013.6497391] [Proceedings]

2013. "Extraterrestrial amino acids identified in metal-rich CH and CB carbonaceous chondrites from Antarctica." Meteoritics & Planetary Science 48 (3): 390-402 [Full Text] [10.1111/maps.12063] [Journal Article/Letter]

2013. "Evidence for perchlorates and the origin of chlorinated hydrocarbons detected by SAM at the Rocknest aeolian deposit in Gale Crater ." Journal of Geophysical Research: Planets 118 1955-1973 [10.1002/jgre.20144] [Journal Article/Letter]

2013. "A search for amino acids and nucleobases in the Martian meteorite Roberts Massif 04262 using liquid chromatography-mass spectrometry." Met. Planet. Sci. 48 786-795 [10.1111/maps.12103] [Journal Article/Letter]

2013. "Evidence for perchlorates and the origin of chlorinated hydrocarbons detected by SAM at the Rocknest aeolian deposit in Gale Crater." J. Geophys. Res. 118 1955 – 1973 [10.1002/jgre.20144] [Journal Article/Letter]

2013. "Volatile, Isotope, and Organic Analysis of Martian Fines with the Mars Curiosity Rover." Science 341 6153 [10.1126/science.1238937] [Journal Article/Letter]

2013. "Evidence for Perchlorates and the Origin of Chlorinated Hydrocarbons Detected by SAM at the Rocknest Aeolian Deposit in Gale Crater." J. Geophys. Res. 118 1955-1973. [Journal Article/Letter]

2013. "Organics Analyzer for Sampling Icy Surfaces: a Liquid Chromatograph-Mass Spectrometer for Future in situ Small Body Missions." IEEE Aerospace Conference Proceedings [Proceedings]

2013. "In situ instrument to detect prebiotic compounds in planetary ices." SPIE Newsroom [DOI: 10.1117/2.1201302.004703] [Report]

2012. "Radar-enabled recovery of the Sutter's Mill meteorite, a carbonaceous chondrite regolith breccia." Science 338 1583-1587 [Full Text] [10.1126/science.1227163] [Journal Article/Letter]

2012. "Radar-Enabled Recovery of the Sutter's Mill Meteorite, a Carbonaceous Chondrite Regolith Breccia." Science 338 (6114): 1583-1587 [10.1126/science.1227163] [Journal Article/Letter]

2012. "Inconclusive evidence for nonterrestrial isoleucine enantiomeric excesses in primitive meteorites." Proceedings of the National Academy of Sciences 109 (48): E3288-E3288 [10.1073/pnas.1213261109] [Journal Article/Letter]

2012. "Compound-specific carbon, nitrogen, and hydrogen isotopic ratios for amino acids in CM and CR chondrites and their use in evaluating potential formation pathways." Meteoritics & Planetary Science 47 (9): 1517-1536 [10.1111/j.1945-5100.2012.01415.x] [Journal Article/Letter]

2012. "Unusual nonterrestrial l-proteinogenic amino acid excesses in the Tagish Lake meteorite." Meteoritics & Planetary Science 47 (8): 1347-1364 [10.1111/j.1945-5100.2012.01400.x] [Journal Article/Letter]

2012. "Unusual nonterrestrial l-proteinogenic amino acid excesses in the Tagish Lake meteorite." Meteoritics and Planetary Science 47 (8): 1347-1364 [Full Text] [10.1111/j.1945-5100.2012.01400.x] [Journal Article/Letter]

2012. "The influence of mineralogy on recovering organic acids from Mars analogue materials using the “one-pot” derivatization experiment on the Sample Analysis at Mars (SAM) instrument suite." Planetary and Space Science 67 (1): 1-13 [10.1016/j.pss.2012.02.010] [Journal Article/Letter]

2012. "The Mars Science Laboratory Organic Check Material." Space Science Reviews 170 (1-4): 479-501 [10.1007/s11214-012-9893-1] [Journal Article/Letter]

2012. "The Sample Analysis at Mars Investigation and Instrument Suite." Space Sci Rev 170 (1-4): 401-478 [10.1007/s11214-012-9879-z] [Journal Article/Letter]

2012. "Understanding the effect of electron gun geometry on emission characteristics for the purpose of optimizing the VAPoR time-of-flight mass spectrometer." Microsystems for Measurement and Instrumentation [10.1109/MAMNA.2012.6195104] [Journal Article/Letter]

2012. "Understanding the effect of electron gun geometry on emission characteristics for the purpose of optimizing the VAPoR time-of-flight mass spectrometer ." Microsystems for Measurement and Instrumentation 1-4 [10.1109/MAMNA.2012.6195104] [Journal Article/Letter]

2012. "A propensity for n-ω-amino acids in thermally altered Antarctic meteorites." Meteoritics & Planetary Science 47 (3): 374-386 [Full Text] [10.1111/j.1945-5100.2012.01341.x] [Journal Article/Letter]

2012. "Volatile Analysis by Pyrolysis of Regolith for Planetary Resource Exploration." IEEE Aerospace Conference Proceedings 1-11, 3-10 [Full Text] [10.1109/AERO.2012.6187065] [Proceedings]

2012. "The influence of mineralogy on recovering organic acids from Mars analogue materials using the ‘‘one-pot’’ derivatization experiment on the Sample Analysis at Mars (SAM) instrument suite." Planetary and Space Science; Elsevier Ltd. 67 1-13 [Full Text] [10.1016/j.pss.2012.02.010] [Journal Article/Letter]

2012. "A propensity for n-ω-amino acids in thermally altered Antarctic meteorites ." Meteoritics and Planetary Science 47 374-386 [10.1111/j.1945-5100.2012.01400.x] [Journal Article/Letter]

2012. "Inconclusive evidence for nonterrestrial isoleucine enantiomeric excesses in primitive meteorites." Proceedings of the National Academy of Sciences of the United States of America 109 (48): E3288-E3288 [Full Text] [10.1073/pnas.1213261109] [Journal Article/Letter]

2012. "The influence of mineralogy on recovering organic acids from Mars analogue materials using the "one-pot" derivatization experiment on the Sample Analysis at Mars (SAM) instrument suite." Planet. Space Sci. 67 1-13 [10.1016/j.pss.2012.02.010] [Journal Article/Letter]

2012. "Compound-specific carbon, nitrogen, and hydrogen isotopic ratios for amino acids in CM and CR chondrites and their use in evaluating potential formation pathways." Meteoritics & Planetary Science 47 (9): 1517–1536 [Full Text] [10.1111/j.1945-5100.2012.01415.x] [Journal Article/Letter]

2012. "A propensity for n-ω-amino acids in thermally altered Antarctic meteorites." Meteoritics and Planetary Science 47 374-386. [Journal Article/Letter]

2012. "Understanding prebiotic chemistry through the analysis of extraterrestrial amino acids and nucleobases in meteorites." Chemical Society Reviews 41 5459-5472 [Full Text] [10.1039/C2CS35109A] [Journal Article/Letter]

2011. "Enhanced Synthesis of Alkyl Amino Acids in Miller’s 1958 H2S Experiment." Orig Life Evol Biosph 41 569–574 [Full Text] [10.1007/s11084-011-9253-2] [Journal Article/Letter]

2011. "Prebiotic synthesis of methionine and other sulfur-containing organic compounds on the primitive Earth: a contemporary reassessment based on an unpublished 1958 Stanley Miller experiment." Orig. Life Evol. Biosph. 41 201-212 [Full Text] [10.1007/s11084-010-9228-8] [Journal Article/Letter]

2011. "Heterogeneous distributions of amino acids provide evidence of multiple sources within the Almahata Sitta parent body, asteroid 2008 TC3." Meteoritics & Planetary Science 46 (11): 1703-1712 [10.1111/j.1945-5100.2011.01257.x] [Journal Article/Letter]

2011. "Carbonaceous meteorites contain a wide range of extraterrestrial nucleobases." Proceedings of the National Academy of Sciences 108 (34): 13995-13998 [10.1073/pnas.1106493108] [Journal Article/Letter]

2011. "Carbonaceous meteorites contain a wide range of extraterrestrial nucleobases." Proceedings of the National Academy of Sciences of the United States of America 108 (34): 13995-13998 [Full Text] [10.1073/pnas.1106493108] [Journal Article/Letter]

2011. "Origin and Evolution of Prebiotic Organic Matter As Inferred from the Tagish Lake Meteorite." Science 332 (6035): 1304-1307 [Full Text] [10.1126/science.1203290] [Journal Article/Letter]

2011. "Primordial synthesis of amines and amino acids in a 1958 Miller H2S-rich spark discharge experiment." Proceedings of the National Academy of Sciences of the United States of America 108 (14): 5526-5531 [Full Text] [10.1073/pnas.1019191108] [Journal Article/Letter]

2011. "The effects of parent body processes on amino acids in carbonaceous chondrites." Meteoritics & Planetary Science 45 1948-1972 [10.1111/j.1945-5100.2010.01132.x] [Journal Article/Letter]

2011. "Distribution and stable isotopic composition of amino acids from fungal peptaibiotics: assessing the potential for meteoritic contamination." Astrobiology 11 (2): 123-133 [Full Text] [10.1089/ast.2010.0505] [Journal Article/Letter]

2011. "Origin and evolution of prebiotic organic matter as inferred from the Tagish Lake meteorite." Science 332 1304-1307 [10.1126/science.1203290] [Journal Article/Letter]

2011. "Enhanced synthesis of alkyl amino acids in Miller's 1958 H2S experiment." Orig. Life Evol. Biosph. 41 569-574 [10.1007/s11084-011-9253-2] [Journal Article/Letter]

2011. "Heterogeneous distributions of amino acids provide evidence of multiple sources within the Almahata Sitta parent body, asteroid 2008 TC3." Meteoritics & Planetary Science 46 (11): 1703-1712 [Full Text] [10.1111/j.1945-5100.2011.01257.x] [Journal Article/Letter]

2010. "The effects of parent body processes on amino acids in carbonaceous chondrites." Meteoritics and Planetary Science 45 1948-1872. [Full Text] [10.1111/j.1945-5100.2010.01132.x] [Journal Article/Letter]

2010. "In situ biological contamination studies of the Moon: Implications for planetary protection and life detection missions." Earth Moon Planets 107 87-93 [Full Text] [10.1007/s11038-010-9361-4] [Journal Article/Letter]

2010. "VAPoR – Volatile Analysis by Pyrolysis of Regolith – an instrument for in situ detection of water, noble gases, and organics on the Moon." Planetary and Space Science 58 (7-8): 1007-1017 [10.1016/j.pss.2010.03.006] [Journal Article/Letter]

2010. "VAPoR – Volatile Analysisby PyrolysisofRegolith–an instrument for in situ detection of water, noble gases, and organics on the Moon." Planetary andSpaceScience (58): 1007–1017 [10.1016/j.pss.2010.03.006] [Journal Article/Letter]

2010. "Extraterrestrial amino acids in the Almahata Sitta meteorite." Meteoritics and Planetary Science 45 (10-11): 1695-1709 [Full Text] [10.1111/j.1945-5100.2010.01094.x] [Journal Article/Letter]

2010. "VAPoR - Volatile Analysis by Pyrolysis of Regolith - an instrument for in situ detection of water, noble gases, and organics on the Moon." Planetary and Space Science 58 1007-1017 [Full Text] [10.1016/j.pss.2010.03.006] [Journal Article/Letter]

2010. "Development of an evolved gas-time-of-flight mass spectrometer for the Volatile Analysis by Pyrolysis of Regolith (VAPoR) instrument." International Journal of Mass Spectrometry 295 124-132 [Journal Article/Letter]

2010. "Assessment and control of organic and other contaminants associated with the Stardust sample return from comet 81P/Wild 2." Meteoritics & Planetary Science 45 (3): 406-433 [Full Text] [10.1111/j.1945-5100.2010.01031.x] [Journal Article/Letter]

2009. "Cometary glycine detected in samples returned by Stardust." Meteoritics & Planetary Science 44 (9): 1323-1330 [Full Text] [10.1111/j.1945-5100.2009.tb01224.x] [Journal Article/Letter]

2009. "Development of a gas chromatography compatible Sample Processing System (SPS) for the in-situ analysis of refractory organic matter in martian soil: preliminary results." Advances in Space Research 43 (1): 143-151 [10.1016/j.asr.2008.05.001] [Journal Article/Letter]

2009. "Enrichment of the amino acid L-isovaline by aqueous alteration on CI and CM meteorite parent bodies." . Proc. Natl. Acad. Sci. USA 106 5487-5492 [Full Text] [10.1073/pnas.0811618106] [Journal Article/Letter]

2008. "The Miller Volcanic Spark Discharge Experiment." Science 322 404 [Full Text] [10.1126/science.1161527] [Journal Article/Letter]

2008. "Polycyclic aromatic hydrocarbons and amino acids in meteorites and ice samples from LaPaz Icefield, Antarctica." Meteoritics and Planetary Science 43 (9): 1465-1480 [Full Text] [10.1111/j.1945-5100.2008.tb01021.x] [Journal Article/Letter]

2008. "Amino Acid Composition of Primitive CR2 Chondrites." Meteoritics and Planetary Science Supplement 43 5195 [Journal Article/Letter]

2008. "Detection of cometary amines in samples returned by Stardust." Meteoritics & Planetary Science 43 (1/2): 399-413 [Full Text] [10.1111/j.1945-5100.2008.tb00629.x] [Journal Article/Letter]

2008. "Extraterrestrial nucleobases in the Murchison meteorite." Earth Planetary Science Letters 270 130-136 [Full Text] [10.1016/j.epsl.2008.03.026] [Journal Article/Letter]

2007. " Amino acid composition, petrology, geochemistry, 14 C terrestrial age and oxygen isotopes of the Shişr 033 CR chondrite ." Meteoritics & Planetary Science 42 (9): 1581-1595 [10.1111/j.1945-5100.2007.tb00592.x] [Journal Article/Letter]

2007. "Amino acid composition, petrology, geochemistry, 14C terrestrial age and oxygen isotopes of the Shishr 033 CR chondrite." Meteoritics & Planetary Science 41 (9): 1581-1596 [Full Text] [10.1111/j.1945-5100.2007.tb00592.x] [Journal Article/Letter]

2006. "Comet 81P/Wild 2 Under a Microscope." Science 314 1711-1716 [Full Text] [10.1126/science.1135840] [Journal Article/Letter]

2006. "Organics captured from comet Wild 2 by the Stardust spacecraft." Science 314 720-724 [Full Text] [10.1126/science.1135841] [Journal Article/Letter]

2006. "A new extraction technique for in situ analyses of amino and carboxylic acids on Mars by gas chromatography mass spectrometry." Planetary and Space Science 54 (15): 1592-1599 [10.1016/j.pss.2006.05.041] [Journal Article/Letter]

2006. "Organics Captured from Comet 81P/Wild 2 by the Stardust Spacecraft." Science 314 1720 [10.1126/science.1135841] [Journal Article/Letter]

2006. "Investigation of Isovaline Enantiomeric Excesses in CM Meteorites Using Liquid Chromatography Time of Flight Mass Spectrometry." ASTROBIOLOGY 6 (1): [Journal Article/Letter]

2006. "Amino acid analyses of Antarctic CM2 meteorites using liquid chromatography-time of flight-mass spectrometry." Met. Planet. Sci. 41 (6): 889-902 [Full Text] [10.1111/j.1945-5100.2006.tb00493.x] [Journal Article/Letter]

2004. "New Method for Estimating Bacterial Cell Abundances in Natural Samples by Use of Sublimation." Applied and Environmental Microbiology 70 (10): 5923-5928 [10.1128/aem.70.10.5923-5928.2004] [Journal Article/Letter]

2004. "International Journal of Astrobiology–Online published article." International Journal of Astrobiology 3 (3): 273-273 [10.1017/s1473550405002211] [Journal Article/Letter]

2004. "Mn-Cr isotope systematics of the D'Orbigny angrite." Meteoritics & Planetary Science 39 (5): 693-700 [10.1111/j.1945-5100.2004.tb00112.x] [Journal Article/Letter]

2004. "Re-examination of amino acids in Antarctic micrometeorites." Advances in Space Research 33 (1): 106-113 [10.1016/j.asr.2003.02.011] [Journal Article/Letter]

2004. "Biological contamination studies of lunar landing sites: implications for future planetary protection and life detection on the Moon and Mars." International Journal of Astrobiology 3 (3): 265–271 [Full Text] [10.1017/S1473550404001958] [Journal Article/Letter]

2002. "Direct Isolation of Purines and Pyrimidines from Nucleic Acids Using Sublimation." Anal. Chem. 74 (24): 6408-6412 [10.1021/ac0259663] [Journal Article/Letter]

2002. "Preservation of amino acids from in situ-produced bacterial cell wall peptidoglycans in northeastern Atlantic continental margin sediments." Limnology and Oceanography 47 (5): 1521-1524 [10.4319/lo.2002.47.5.1521] [Journal Article/Letter]

2002. "Amino acids in the Tagish Lake meteorite." Meteoritics & Planetary Science 37 (5): 697-701 [10.1111/j.1945-5100.2002.tb00849.x] [Journal Article/Letter]

2002. "Relative amino acid concentrations as a signature for parent body processes of carbonaceous chondrites." Origins of Life and Evolution of the Biosphere 32 (2): 143-163 [10.1023/a:1016019425995] [Journal Article/Letter]

2001. "Survival of Amino Acids in Micrometeorites During Atmospheric Entry." Astrobiology 1 (3): 259-269 [10.1089/15311070152757456] [Journal Article/Letter]

2001. "Extraterrestrial amino acids in Orgueil and Ivuna: Tracing the parent body of CI type carbonaceous chondrites." Proceedings of the National Academy of Sciences 98 (5): 2138-2141 [10.1073/pnas.051502898] [Journal Article/Letter]

2001. "Detecting pyrolysis products from bacteria on Mars." Earth and Planetary Science Letters 185 (1-2): 1-5 [10.1016/s0012-821x(00)00370-8] [Journal Article/Letter]

2000. "MOD: an organic detector for the future robotic exploration of Mars." Planetary and Space Science 48 (11): 1087-1091 [10.1016/s0032-0633(00)00082-9] [Journal Article/Letter]

1999. "Microfabricated Capillary Electrophoresis Amino Acid Chirality Analyzer for Extraterrestrial Exploration." Anal. Chem. 71 (18): 4000-4006 [10.1021/ac9903959] [Journal Article/Letter]

1999. "Amino acids in the Martian meteorite Nakhla." Proceedings of the National Academy of Sciences 96 (16): 8835-8838 [10.1073/pnas.96.16.8835] [Journal Article/Letter]

1998. "Isolation of Amino Acids from Natural Samples Using Sublimation." Anal. Chem. 70 (15): 3119-3122 [10.1021/ac9803784] [Journal Article/Letter]

1998. "A search for extraterrestrial amino acids in carbonaceous Antarctic micrometeorites." Origins of Life and Evolution of the Biosphere 28 (4/6): 413-424 [10.1023/a:1006548905523] [Journal Article/Letter]

1997. "Polycyclic aromatic hydrocarbons (PAHs) in Antarctic Martian meteorites, carbonaceous chondrites, and polar ice." Instruments, Methods, and Missions for the Investigation of Extraterrestrial Microorganisms 3111 36-50 [10.1117/12.278782] [Proceedings]

1997. "Polycyclic aromatic hydrocarbons (PAHs) in Antarctic Martian meteorites, carbonaceous chondrites, and polar ice." Geochimica et Cosmochimica Acta 61 (2): 475-481 [10.1016/s0016-7037(96)00400-0] [Journal Article/Letter]

Non-Refereed

2021. "Deep Trek: Mission Concepts for Exploring Subsurface Habitability & Life on Mars — A Window into Subsurface Life in the Solar System." Vol. 53, Issue 4 (Planetary/Astrobiology Decadal Survey Whitepapers) 53 (4): [10.3847/25c2cfeb.5f50cebc] [Journal Article/Letter]

2019. "Frozen in Time: Hunting Meteorites in Antarctica for Signs of Life." [Full Text] [Book]

2019. "The CAESAR New Frontiers Mission: 3. Tag site selection and camera suite." Proceedings of the 50th Lunar and Planetary Science Conference, The Woodlands, Texas, U.S.A., March 18-22, 2019, Paper # 2722 [Full Text] [Proceedings]

2018. "The CAESAR New Frontiers Mission: 3. TAG Site Selection and Camera Suite." 49th Lunar and Planetary Science Conference, 2018 2083 [Full Text] [Proceedings]

2018. "A universal approach in the search for life at the molecular level." A White Paper in response to the ASTROBIOLOGY SCIENCE STRATEGY FOR THE SEARCH FOR LIFE IN THE UNIVERSE [Other]

2015. "Investigating the Effects of Cosmic Ray Exposure on Amino Acids in Meteorites: Implications for Future Small Body Sample Return Missions ." LPI Contributions 1829 6003- [Proceedings]

2015. "Martian Chlorobenzene Identified by Curiosity in Yellowknife Bay: Evidence for the Preservation of Organics in a Mudstone on Mars ." Lunar and Planetary Science Conference 46 1178- [Proceedings]

2015. "Atypical Amino Acid Structural and Isotopic Compositions in the CR2 Chondrite Miller Range 090001 and the CH3 Chondrite Sayh al Uhaymir 290." Lunar and Planetary Science Conference 46 2242- [Proceedings]

2013. "Detection of Organic Constituents Including Chloromethylpropene in the Analyses of the Rocknest Drift by Sample Analysis at Mars (SAM)." Lunar and Planetary Science Conference [Full Text] [Proceedings]

2011. "Thermochemolysis: A New Sample Preparation Approach for the Detection of Organic Components of Complex Macromolecules in Mars Rocks via Gas Chromatography Mass Spectrometry in SAM on MSL." 42nd Lunar and Planetary Science Conference [Full Text] [Proceedings]

2010. "Laboratory Studies of the Liquid Water Content and the Degradation Rates of Organic Biomarkers in the Shallow Martian Subsurface." Astrobiology Science Conference [Proceedings]

2010. "Organic biosignatures and habitat features of near-surface glacial ice in Svalbard." Astrobiology Science Conference 2010 [Full Text] [Proceedings]

Selected Public Outreach