Solar System Exploration Division

Jason P Dworkin

(Senior Scientist)

Jason P Dworkin's Contact Card & Information.
Phone: 301.286.8631
Org Code: 690
Mail Code 691
Greenbelt, MD 20771

Brief Bio

Jason Dworkin's (he/him) objective is to assess the organic species available for the origin and early evolution of life with a focus is on understanding the extraterrestrial input and origin of molecules relevant for life. This objective has been to study increasingly documented and constrained systems, from plausibly early Earth chemistry, chemistry of astrophysically relevant laboratory ices, organic and chiral analysis of meteorites, to analysis of sample returned material and how to protect that material from contamination. This research employs modern analytical methods to examine authentic samples of the early solar system as well as laboratory models of ancient environments. This involves both directing research in the Astrobiology Analytical Laboratory at NASA Goddard Space Flight Center (GSFC) and scientific leadership in NASA sample return and in situ missions.

Current Projects

Research Group


Funding and Themes


NASA Astrobiology

NASA Planetary Science


Technology & Missions

Low Earth Orbit

Near Earth Asteroids

  • OSIRIS-REx: Project scientist, contamination science lead, sample analysis
  • Hayabusa2: Deputy for international soluble organic material analysis sample team



  • Stardust: Returned sample analysis
  • CAESAR Phase A concept: Contamination science lead, co-I


Senior Scientist for Astrobiology


February 2020 - Present

Project Scientist for OSIRIS-REx


May 2011 - Present

Supervisory Research Scientist


August 2019 - February 2020

Acting Deptuty Director, Solar System Exploration (Code 690)

Supervisory Research Scientist


November 2008 - February 2020

Chief of Astrochemistry (Code 691)

Deputy Project Scientist for OSIRIS-REx


2006 - 2011

Research Scientist


September 2002 - November 2008

Research Scientist

SETI Institute: Center for the Study of Life in the Universe/NASA's Ames Research Center: Astrochemistry Lab - Mountain View, CA

July 1997 - September 2002

Pre-doctoral fellow

NASA Specialized Center of Research and Training (NSCORT) Exobiology - San Diego, CA

September 1991 - June 1997


Department of Biochemical and Biophysical Sciences & Biology, University of Houston - Houston, TX

January 1985 - May 1987


1997 - Ph.D. (Biochemistry) University of California, San Diego (UCSD)
Dissertation "Alternatives to Uracil in the Pre-RNA World."

1991 - A.B. (Biochemistry, with Distinction) Occidental College

Professional Societies

Meteoritical Society

2010 - Present

International Society for the Study of the Origins of Life

1993 - Present

American Chemistry Society

1991 - Present

Alpha Chi Sigma

1988 - Present

International Astronomical Union (IAU) Division F, Planetary Systems and Astrobiology

2023 - Present

Professional Service

  • 2020 - : Member of Prebiotic Chemistry and Early Earth Environments Consortium
  • 2020 - : Editorial Board of Universe
  • 2019 - 2022: International Deputy Lead for Hayabusa2 Soluble Organic Matter sample analysis team; Lead of Consortium for Hyabusa2 Analysis of Organic Solubles (CHAOS) at GSFC
  • 2018 - 2022: Member of COSPAR Sample Safety Assessment Protocol (SSAP) Working Group for Mars sample return planetary protection
  • 2018 - 2019: Co-I and Contamination Science Lead of CAESAR Phase A mission concept for New Frontiers 4
  • 2014: Member of ESA Planetary Protection of Outer Solar System (PPOSS) Organic Panel
  • 2014: Member of NASA Mars 2020 Organic Contamination Panel (OCP)
  • 2014 - 2023: Editorial Board of Origins of Life and Evolution of Biospheres
  • 2013 - 2016: Editorial Board of Life
  • 2013 - 2023: Simons Collaboration on the Origins of Life Investigator
  • 2011 - : Project Scientist, OSIRIS-REx
  • 2011 - : MSL/SAM, Collaborator
  • 2006 - 2011: Deputy Project Scientist, OSIRIS and OSIRIS-REx proposals and concept studies
  • 2006 - : Contamination Control Science Lead, OSIRIS and OSIRIS-REx
  • 2006: Stardust Organics Preliminary Examination Team
  • 2005 - : Mars Organic Molecule Analyzer (Exo-Mars/ MOMA) Co-I
  • 2004: Member of Mars Organic Contamination Science Steering Group (OCSSG)
  • 2002 - : Founder and director of GSFC Astrobiology Analytical Laboratory
  • 2002 - 2008: Research Scientist, GSFC
  • 1997 - 2002: Research Scientist SETI Institute: Center for the Study of Life in the Universe/NASA's Ames Research Center: Astrochemistry Lab (with Louis Allamandola)
  • 1991 - 1997: Pre-doctoral fellow NASA Specialized Center of Research and Training (NSCORT) Exobiology, University of California, San Diego (with Stanley Miller)
  • 1985 - 1987: High School Intern Department of Biochemical and Biophysical Sciences & Biology, University of Houston (with Joan Oró)


  • 2024: Rotary National Award for Space Achievement (RNASA) Stellar Award, OSIRIS-REx Team
  • 2024: National Aeronautic Association’s Robert J. Collier Trophy, OSIRIS-REx Team
  • 2024: The National Space Club and Foundation Dr. Robert H. Goddard Memorial Trophy, OSIRIS-REx Team
  • 2024: American Astronautical Society Neil Armstrong Space Flight Achievement Award, OSIRIS-REx Team
  • 2023: NASA Group Achievement Award, OSIRIS-REx Team
  • 2023: NASA Group Achievement Award, NASA Hayabusa2 Team
  • 2022: Robert H. Goddard Award (Team), Consortium for Hayabusa2 Analysis of Organic Solubles
  • 2022: Space Foundation John L. "Jack" Swigert Jr. Award for Space Exploration, OSIRIS-REx Team
  • 2020: NASA Silver Achievement Medal, OSIRIS-REx Site Selection Team
  • 2020: American Astronautical Society Space Technology Award, OSIRIS-REx Team
  • 2019: NASA Group Achievement Award, OSIRIS-REx Asteroid Approach and Preliminary Survey Team
  • 2018: NASA Group Achievement Award, OSIRIS-REx Earth Gravity Assist Team
  • 2017: Kennedy Space Center Group Achievement Award, OSIRIS-REx Launch Team
  • 2017: NASA Silver Achievement Medal, OSIRIS-REx Project Management Team
  • 2017: NASA Group Achievement Award, OSIRIS-REx Launch Service Team
  • 2017: NASA Group Achievement Medal, Biomolecule Sensor Team
  • 2017: NASA Group Achievement Award, MSL Extended Mission-1 Science and Operations Team
  • 2016: Goddard Sciences and Exploration Directorate Award of Excellence
  • 2015: NASA Group Achievement Award, MSL Prime Mission Science and Operations Team
  • 2014: Robert H. Goddard Award (Team), OSIRIS-REx Proposal Team
  • 2013: Robert H. Goddard Award (Team), Astrobiology Walk Design Team
  • 2013: NASA Group Achievement Award, Sample Analysis at Mars Team
  • 2013: Asteroid (27347) 2000 DN14 was renamed Dworkin
  • 2012: NASA Outstanding Leadership Medal
  • 2011: NASA Group Achievement Award, Sample Analysis at Mars Team
  • 2009: Robert H. Goddard Leadership Award
  • 2009: Goddard IRAD Innovator of the Year Award (Team), TMAH Thermochemolysis Team
  • 2007: Goddard Exceptional Achievement Award
  • 2007: Goddard IRAD Innovator of the Year Award (Team), VAPoR Instrument Team
  • 2007: Goddard Center Director’s Team Recognition Award, OSIRIS Proposal Team
  • 2002: Goddard Exceptional Achievement Award
  • 2002: NASA Group Achievement Award, NASA Ames Astrochemistry Laboratory
  • 1998-2002, 2003-2020 : Member NASA Astrobiology Institute (CAN 1 (Ames), 3, 5, 7 (GSFC))
  • 1996-1997: NSCORT Exobiology Adjunct Fellow
  • 1992-1996: NSCORT Exobiology Pre-doctoral Fellow
  • 1993 UCSD Department of Chemistry and Biochemistry TA of the Year Honorable Mention
  • 1991: Merck Award for Top Graduating Biochemistry Major (Research), Occidental College
  • 1987: Eagle Scout



2024. "Primordial aqueous alteration recorded in water-soluble organic molecules from the carbonaceous asteroid (162173) Ryugu." Nature Communications 15 (1): 5708 [10.1038/s41467-024-49237-6] [Journal Article/Letter]

2024. "Variable and Large Losses of Diagnostic Biomarkers After Simulated Cosmic Radiation Exposure in Clay- and Carbonate-Rich Mars Analog Samples." Astrobiology [10.1089/ast.2023.0123] [Journal Article/Letter]

2024. "Asteroid (101955) Bennu in the laboratory: Properties of the sample collected by OSIRIS-REx." Meteoritics & Planetary Science [Full Text] [10.1111/maps.14227] [Journal Article/Letter]

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. "Thresholds of Temperature and Time for Mars Sample Return: Final Report of the Mars Sample Return Temperature-Time Tiger Team." Astrobiology 24 (5): 443-488 [10.1089/ast.2023.0098] [Journal Article/Letter]

2024. "Soluble Organic Compounds and Cyanide in Apollo 17 Lunar Samples: Origins and Curation Effects." Journal of Geophysical Research: Planets 129 (4): [10.1029/2023je008133] [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. "Position-specific carbon isotopes of Murchison amino acids elucidate extraterrestrial abiotic organic synthesis networks." Geochimica et Cosmochimica Acta 355 210-221 [Full Text] [10.1016/j.gca.2023.06.010] [Journal Article/Letter]

2023. "Ryugu asteroid sample return provides a natural laboratory for primordial chemical evolution." Nature Communications 14 (1): 3107 [10.1038/s41467-023-38518-1] [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. "Curation planning and facilities for asteroid Bennu samples returned by the OSIRIS‐REx mission." Meteoritics & Planetary Science 1-19 [10.1111/maps.13973] [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. "Deuterium Isotope Fractionation of Polycyclic Aromatic Hydrocarbons in Meteorites as an Indicator of Interstellar/Protosolar Processing History." Life 12 (9): 1368 [10.3390/life12091368] [Journal Article/Letter]

2022. "COSPAR Sample Safety Assessment Framework (SSAF)." Astrobiology 22 (S1): S-186-S-216 [Full Text] [10.1089/ast.2022.0017] [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. "Assessing the Sampleability of Bennu’s Surface for the OSIRIS-REx Asteroid Sample Return Mission." Space Science Reviews 218 (4): 20 [Full Text] [10.1007/s11214-022-00887-2] [Journal Article/Letter]

2022. "Crater population on asteroid (101955) Bennu indicates impact armouring and a young surface." Nature Geoscience 15 440-446 [Full Text] [10.1038/s41561-022-00914-5] [Journal Article/Letter]

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. "Experimental and Theoretical Constraints on Amino Acid Formation from PAHs in Asteroidal Settings." ACS Earth and Space Chemistry 6 468-481 [Full Text] [10.1021/acsearthspacechem.1c00329] [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. "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. "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. "Particle Size-Frequency Distributions of the OSIRIS-REx Candidate Sample Sites on Asteroid (101955) Bennu." Remote Sensing 13 (7): 1315 [Full Text] [10.3390/rs13071315] [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. "Carbon isotope evidence for the substrates and mechanisms of prebiotic synthesis in the early solar system." Geochimica et Cosmochimica Acta 292 188-202 [Full Text] [10.1016/j.gca.2020.09.026] [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. "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. "Prokaryotic and Fungal Characterization of the Facilities Used to Assemble, Test, and Launch the OSIRIS-REx Spacecraft." Frontiers in Microbiology 11 530661 [Full Text] [10.3389/fmicb.2020.530661] [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. "Airfall on Comet 67P/Churyumov–Gerasimenko." Icarus 354 114004 [Full Text] [10.1016/j.icarus.2020.114004] [Journal Article/Letter]

2020. "Impact of Phyllosilicates on Amino Acid Formation under Asteroidal Conditions." ACS Earth and Space Chemistry 4 (8): 1398-1407 [Full Text] [10.1021/acsearthspacechem.0c00137] [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. "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]

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. "Outgassing from the OSIRIS-REx Sample Return Capsule: Characterization and Mitigation." Acta Astronautica 166 391-399 [Full Text] [10.1016/j.actaastro.2019.07.043] [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. "Organometallic compounds as carriers of extraterrestrial cyanide in primitive meteorites." Nature Communications 10 2777 [Full Text] [10.1038/s41467-019-10866-x] [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. "Craters, boulders and regolith of (101955) Bennu indicative of an old and dynamic surface." Nature Geoscience 12 (4): 242-246 [Full Text] [10.1038/s41561-019-0326-6] [Journal Article/Letter]

2019. "The unexpected surface of asteroid (101955) Bennu." Nature 568 (7750): 55-60 [Full Text] [10.1038/s41586-019-1033-6] [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. "Analyses of Aliphatic Aldehydes and Ketones in Carbonaceous Chondrites." ACS Earth & Space Chemistry 3 463-472 [Full Text] [10.1021/acsearthspacechem.9b00006] [Journal Article/Letter]

2019. "Molecular distribution, 13C-isotope, and enantiomeric compositions of carbonaceous chondrite monocarboxylic acids." Meteoritics & Planetary Science 54 (2): 415-430 [Full Text] [10.1111/maps.13216] [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. "The OSIRIS-REx Spacecraft and the Touch-and-Go Sample Acquisition Mechanism (TAGSAM)." Space Science Reviews 214 (7): 107 [Full Text] [10.1007/s11214-018-0521-6] [Journal Article/Letter]

2018. "The SPECTRAL Ice Chamber: Application to Titan's Stratospheric Ice Clouds." The Astrophysical Journal 865 (1): 62 [Full Text] [10.3847/1538-4357/aadbab] [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 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. "Hydrothermal Decomposition of Amino Acids and Origins of Prebiotic Meteoritic Organic Compounds." ACS Earth & Space Chemistry [Full Text] [10.1021/acsearthspacechem.8b00025] [Journal Article/Letter]

2017. "Nanopore DNA Sequencing and Genome Assembly on the International Space Station." Scientific Reports 7 (1): 18022 [Full Text] [10.1038/s41598-017-18364-0] [Journal Article/Letter]

2017. "OSIRIS-REx: Sample Return from Asteroid (101955) Bennu." Space Science Reviews 212 925-984 [Full Text] [10.1007/s11214-017-0405-1] [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. "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. "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. "Spontaneous Oligomerization of Nucleotide Alternatives in Aqueous Solutions." Origins of Life and Evolution of Biospheres 47 (1): 3-11 [Full Text] [10.1007/s11084-016-9484-3] [Journal Article/Letter]

2016. "Aliphatic Amines in Antarctic CR2, CM2, and CM1/2 Carbonaceous Chondrites." Geochimica et Cosmochimica Acta 189 296-311 [Full Text] [10.1016/j.gca.2016.06.018] [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]

2015. "Indigenous aliphatic amines in the aqueously altered Orgueil meteorite." Meteoritics & Planetary Science 50 1733-1749 [Full Text] [10.1111/maps.12507] [Journal Article/Letter]

2015. "The OSIRIS-REx Asteroid Sample Return Mission." 2015 IEEE Aerospace Conference 1-14 [Full Text] [10.1109/AERO.2015.7118989] [Journal Article/Letter]

2015. "Prebiotic Alternatives to Proteins: Structure and Function of Hyperbranched Polyesters." Origins of Life and Evolution of the Biosphere 45 123-137 [Full Text] [10.1007/s11084-015-9430-9] [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. "The origin of amino acids in lunar regolith samples." Geochimica et Cosmochimica Acta 172 357-369 [Full Text] [10.1016/j.gca.2015.10.008] [Journal Article/Letter]

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]

2014. "Planning Considerations Related to the Organic Contamination of Martian Samples and Implications for the Mars 2020 Rover." Astrobiology 14 (12): 969-1027 [Full Text] [10.1089/ast.2014.1244] [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. "Assessing the origins of aliphatic amines in the Murchison meteorite from their compound-specific carbon isotopic ratios and enantiomeric composition." Geochimica et Cosmochimica Acta 141 331-345 [Full Text] [10.1016/j.gca.2014.06.035] [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. "Assessing the origins of aliphatic amines in the Murchison meteorite from their compound-specific carbon isotopic ratios and enantiomeric composition." Geochimica et Cosmochimica Acta 141 331-345 [Full Text] [10.1016/j.gca.2014.06.035] [Journal Article/Letter]

2014. "Amino acids generated from hydrated Titan tholins: Comparison with Miller–Urey electric discharge products." Icarus 237 182-189 [Full Text] [10.1016/j.icarus.2014.04.042] [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. "Investigation of pyridine carboxylic acids in CM2 carbonaceous chondrites: Potential precursor molecules for ancient coenzymes." Geochimica et Cosmochimica Acta 136 1-12 [Full Text] [10.1016/j.gca.2014.04.001] [Journal Article/Letter]

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. "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. "1-Azaniumylcyclobutane-1-carboxylate monohydrate." Acta Crystallographica Section E E70 217-218 [Full Text] [10.1107/S1600536813033217] [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]

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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. "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. "Isovaline monohydrate." Acta Crystallographica E69 o1829–o1830 [Full Text] [1107/S1600536813031] [Journal Article/Letter]

2013. "2-Methylaspartic acid monohydrate." Acta Cryst. E 69 o1856–o1857 [Full Text] [10.1107/S1600536813032170] [Journal Article/Letter]

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. "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 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. "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]

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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. "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. "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. "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. "HPLC." Encyclopedia of Astrobiology 765-765 [10.1007/978-3-642-11274-4_740] [Journal Article/Letter]

2011. "Chromatography." Encyclopedia of Astrobiology 302 [10.1007/978-3-642-11274-4_289] [Journal Article/Letter]

2011. "Chromatographic Co-elution." Encyclopedia of Astrobiology 302 [10.1007/978-3-642-11274-4_289] [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. "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. "On the origin of primitive cells: from nutrient intake to elongation of encapsulated nucleotides." Angew. Chem. Int. Ed. 49 3738-3750 [Full Text] [10.1002/anie.200905465] [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. "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. "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]

2009. "Enigmatic Isovaline: Investigating the Stability, Racemization, and Formation of a Non-Biological Meteoritic Amino Acid." Astronomical Society of the Pacific Bioastronomy 2007: Molecules, Microbes, and Extraterrestrial Life [Full Text] [Article in Book]

2009. "Formation of uracil from the UV photo-irradiation of pyrimidine in pure H2O ices." Astrobiology 9 683-695 [Full Text] [10.1089/ast.2008.0324] [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. "Abiotic formation of RNA-like oligomers by montmorillonite catalysis: Part II." International Journal of Astrobiology 7 1–7 [Full Text] [10.1017/S147355040700393X] [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]

2008. "Amino Acids from Ion-Irradiated Nitrile-Containing Ices." Astrobiology 8 771-779 [Full Text] [10.1089/ast.2007.0131] [Journal Article/Letter]

2007. "Mechanisms of amino acid formation in interstellar ice analogs." Astrophysical Journal 660 911-918 [Full Text] [10.1086/513141] [Journal Article/Letter]

2007. "A radical pathway for organic phosphorylation during schreibersite corrosion with implications for the origin of life." Geochimica et Cosmochimica Acta 71 1581-1596 [Full Text] [10.1016/j.gca.2006.12.018] [Journal Article/Letter]

2007. "Sequence Analysis of Trimer Isomers Formed by Montmorillonite Catalysis in the Reaction of Binary Monomer Mixtures." ASTROBIOLOGY 7 (5): 715-722 [Full Text] [10.1089/ast.2007.0138] [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]

2007. "Ultraviolet photolysis of anthracene in H2O interstellar ice analogs: potential connection to meteoritic organics." Meteoritics & Planetary Science 42 (12): 2035-2041 [Full Text] [10.1111/j.1945-5100.2007.tb01005.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. "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]

2005. "Chemistry and Physics of Primitive Membranes." Topics in Current Chemistry 259 1-27 [Full Text] [10.1007/b105128] [Article in Book]

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]

2004. "An evolutionary connection between interstellar ices and IDPs? Clues from mass spectroscopy measurements of laboratory simulations." Advances in Space Research 33 67-71 [Full Text] [10.1016/j.asr.2003.08.004] [Journal Article/Letter]

2003. "Luminescence from Vacuum‐Ultraviolet–irradiated Cosmic Ice Analogs and Residues." The Astrophysical Journal 583 (1): 514-523 [Full Text] [10.1086/345349] [Journal Article/Letter]

2003. "The roads to and from the RNA world." Journal of Theoretical Biology; Elsevier Science Ltd. 127-134 [Full Text] [10.1016/S0022-5193(03)00020-1] [Journal Article/Letter]

2002. "Racemic amino acids from the ultraviolet photolysis of interstellar ice analogues." Nature 416 401-403 [Full Text] [10.1038/416401a] [Journal Article/Letter]

2002. "Ultraviolet irradiation of the polycyclic aromatic hydrocarbon (PAH) naphthalene in H2O. Implications for meteorites and biogenesis." Advances in Space Research 30 (6): 1501-1508 [Full Text] [10.1016/s0273-1177(02)00501-x] [Journal Article/Letter]

2002. "The First Cell Membranes." Astrobiology 2 (4): 371-381 [Full Text] [10.1089/153110702762470482] [Journal Article/Letter]

2002. "Side group addition to the polycyclic aromatic hydrocarbon coronene by ultraviolet photolysis in cosmic ice analogs." Astrophysical Journal 576 (2): 1115-1120 [Full Text] [10.1086/341863] [Journal Article/Letter]

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2024. "QRIS: A Quantitative Reflectance Imaging System for the Pristine Sample of Asteroid Bennu." arXiv [Full Text] [10.48550/arXiv.2402.18674] [Journal Article/Letter]

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Talks, Presentations and Posters


What Is Life? Does It Exist Beyond Earth?

April 12, 2021

Podcast by American Chemical Society

Host Sam Jones. In today’s episode, we’re talking about life. What it is, how it started here on Earth, and how we’re trying to find it in other parts of the universe. 

Secrets of the Asteroids


Strip the Cosmos Season 4 Episode 5

This episode unpacks NASA’s OSIRIS-REx mission to return a sample of rock from asteroid Bennu.

Here & Now: NASA Attempts First-Ever Mission To Collect Asteroid Sample

November 20, 2020

Radio by NPR/WBUR

Host Peter O’Dowd. After two years of waiting for the perfect opportunity, NASA on Tuesday will try to collect a sample from an asteroid for the first time.

OSIRIS-REx & the Origin of Life

November 14, 2020

YouTube by NASA

A historic moment is on the horizon for NASA’s first asteroid sample return mission, OSIRIS-REx.

Are We There Yet?: Ancient Asteroid Dust & Deep Space Delivery

November 13, 2020

Podcast by NPR/WMFT

Host Brendan Byrne, interviewed scientist Jason Dworkin about the steps of TAG and what scientists hope to learn about this mission milestone.

Gravity Assist: A Special Delivery of Life’s Building Blocks, with Jason Dworkin

June 15, 2020

Podcast by NASA

Dr. Jim Green, NASA's director of planetary science, takes you on a guided tour of the solar system and beyond. 

The Dig: NASA Asteroid

August 3, 2019

PBS by Maryland Public Television

NASA Goddard scientists are orbiting a spacecraft around a nearby asteroid, in an effort to learn about the formation of the solar system.

People of OSIRIS-REx

December 19, 2018 by NASA Goddard

This short Q&A was featured in a article introducing a selection of people who work on the OSIRIS-REx mission to explore asteroid Bennu.

Mystery of the Alien Asteroid 

November 22, 2018

Strip the Cosmos Season 3 Episode 1

Scientists have spotted a mysterious object the size and shape of a skyscraper hurtling through space.

OSIRIS-REx: First U.S. Mission to Return Samples from an Asteroid to Earth

22, 2016

YouTube by the Library of Congress

Jason Dworkin discussed the OSIRIS-REx, the first U.S. space mission that will return samples from an asteroid to Earth.

The Science of OSIRIS-REx

October 6, 2016

YouTube by NASA

On Sept. 6, NASA previewed the science of the OSIRIS-REx mission, during a pre-launch news conference at NASA KSC.

Studying an Asteroid on Earth

July 30, 2015

YouTube by NASA Goddard

The material collected by OSIRIS-REx will provide a wealth of data for future generations of astrobiologists, shedding light on one of Earth’s biggest mysteries.


September 9, 2012

YouTube by Department of Defense

The military is helping NASA to unlock the secrets of life itself by reaching out into the stars with the OSIRIS-REx mission.

NASA | Inside Astrobiology: Jason Dworkin

September 26, 2010

YouTube by NASA Goddard

Jason Dworkin, Chief of the Astrochemistry Laboratory, talks about solving problems, analyzing comets, and the great team of people working to answer science's biggest questions.