The Cosmic Ice Laboratory

The Cosmic Ice Laboratory


Photo of Reggie Hudson

Dr. Reggie Hudson

Astrochemistry Laboratory, Code 691
NASA Goddard Space Flight Center
Greenbelt, MD 20771

Office Phone:
(301) 286-6961

reggie.hudson@nasa.gov

hudsonrl@eckerd.edu


Present Positions

Associate Chief, Astrochemistry Laboratory, NASA Goddard Space Flight Center
Lecturer, Department of Astronomy, University of Maryland
Emeritus Professor of Chemistry, Eckerd College

Education

1978 - Ph.D., Physical Chemistry, University of Tennessee
1974 - A.B., Chemistry and Mathematics, Pfeiffer University (Misenheimer, NC)

Research Areas

Chemistry and physics of cosmic ices (cometary, icy satellite, and interstellar)
Radiation chemistry and photochemistry applied to astrochemical problems
Molecular spectroscopy, especially as applied to molecular structure, bonding, and reactions

Teaching Areas

Courses in physical chemistry, astrobiology, and astronomy
Courses in introductory chemistry and in the history and methods of science
Courses in Eckerd College's Honors Program (served as program's first director)

Professional Societies

American Chemical Society: Chemical Education, Physical Chemistry, and History of Chemistry Divisions
Royal Society of Chemistry (U.K.): Education, History of Chemistry, and Faraday Divisions
American Astronomical Society: Division for Planetary Sciences
American Geophysical Union: Planetary Sciences Section
Coblentz Society
International Astronomical Union
Sigma Xi (Life Member)
American Association of University Professors

Recent Professional Activities

Member of the astrobiology team at NASA's Goddard Space Flight Center
Manuscript reviewer for Journal of the American Chemical Society, Chemical Physics, Chemical Physics Letters, Molecular Physics, Journal of Physical Chemistry, Journal of Chemical Education, The Astrophysical Journal, Planetary and Space Science, Astronomy & Astrophysics, Icarus, Astrobiology, Origins of Life and Evolution of Biospheres, Journal of Geophysical Research - Planets, and Spectrochemica Acta
Proposal reviewer for NASA programs in Planetary Geology and Geophysics, Exobiology, Outer planets, Astrophysics Research and Analysis, Cassini Data Analysis, and Planetary Atmospheres
Presentations at meetings of the NASA Astrobiology Institute, American Chemical Society, American Geophysical Union, and American Astronomical Society
Presentations at meetings of the Congress of Space Researchers (COSPAR)
Presentations at "Asteroids, Comets, and Meteors" meetings
Presentations at workshops on Kuiper-Belt objects (Paris), solid-state astrochemistry (Holland), outer planets (Boulder), space weathering (San Francisco), and solar-system ices (Maryland)

Grant Support

Research - Continuous grant support from NASA for research from 1991 to the present; most recent grant support from NASA's Planetary Atmospheres, Outer Planets Research, Cassini Data Analysis, Planetary Geology and Geophysics, and Astrophysics Research and Analysis programs

Teaching - Support from the NSF Instrumentation Program and the Howard Hughes Medical Institute; numerous internal grants from Eckerd College

Selected Refereed Publications from the Cosmic Ice Laboratory

Loeffler, M. J., Hudson, R. L., Chanover, N. J., and Simon, A. A. (2015). Giant-planet Chemistry: Ammonium Hydrosulfide (NH4SH), its IR Spectra and Thermal and Radiolytic Stabilities. Icarus, 258, 181-191.

Gerakines, P. A. and Hudson, R. L. (2015). First Infrared Band Strengthe for Amorphous CO2, an Overlooked Component of Interstellar Ices. The Astrophysical Journal Letters, 808, L40-L46. PDF

Smith, K. E., Gerakines, P. A., and Callahan, M. P. (2015). Metabolic Precursors in Astrophysical Ice Analogs. Chemical Communications, DOI: 10.1039/c5cc03272e

Gerakines, P. A. and Hudson, R. L. (2015). The Infrared Spectra and Optical Constants of Elusive Amorphous Methane. The Astrophysical Journal Letters, 805, L20-L24. PDF

Hudson, R. L., Gerakines, P. A., and Loeffler, M. (2015). Activation of Weak IR Fundamentals of Two Species of Astrochemical Interest in the Td Point Group - The Importance of Amorphous Ices. Physical Chemistry Chemical Physics, accepted for publication, in press PDF

Loeffler, M. and Hudson, R. L. (2015). Descent without Modification? The Thermal Chemistry of H2O2 on Europa and Other Icy Worlds. Astrobiology, 15, 453-461 PDF - preprint

Gerakines, P. A. and Hudson, R. L. (2015). The Radiation Stability of Glycine in Solid CO2 - In situ Laboratory Measurements with Applications to Mars. Icarus, 252, 466-472. PDF

Hudson, R. L., Gerakines, P. A., and Moore, M. H. (2014). Infrared Spectra and Optical Constants of Astronomical Ices: II. Ethane and Ethylene. Icarus, 243, 148-147. PDF

Hudson, R. L., Ferrante, R. F., and Moore, M. H. (2014). Infrared Spectra and Optical Constants of Astronomical Ices: I. Amorphous and Crystalline Acetylene. Icarus, 228, 276-287. PDF

Smith, K. E., Callahan, M. P., Gerakines, P. A., Dworkin, J. P., and House, C. H. (2014). Investigation of Pyridine Carboxylic Acids in CM2 Carbonaceous Chondrites: Potential Precursor Molecules for Ancient Coenzymes. Geochimica et Cosmochimica Acta 136, 1-12. PDF

Hudson, R. L. and Loeffler, M. J. (2013). Ketene Formation in Interstellar Ices: A Laboratory Study. The Astrophysical Journal, 773, 773-782.

Callahan, M. P., Gerakines, P. A., Martin, M. G., Peeters, Z., and Hudson, R. L. (2013). Irradiated Benzene Ice Provides Clues to Meteoritic Organic Chemistry. Icarus, 226, 1201-1209. PDF

Loeffler, M. and Hudson, R. L. (2013). Low-temperature Thermal Reactions between SO2 and H2O2 and their Relevance to the Jovian Icy Satellites. Icarus, 224, 257-259. PDF

Gerakines, P. A. and Hudson, R. L. (2013). Glycine's Radiolytic Destruction in Ices: First in situ Laboratory Measurements for Mars. Astrobiology, 13, 647-655. PDF

Gerakines, P. A., Hudson, R. L., Moore, M. H., and Bell, J-L. (2012). In-situ Measurements of the Radiation Stability of Amino Acids at 15 - 140 K. Icarus, 220, 647-659. PDF

Knez, C., Moore, M. H., Ferrante, R. F., and Hudson, R. L. (2012). Laboratory IR Studies and Astrophysical Implications of C2H2-Containing Binary Ices. The Astrophysical Journal, 748, 95. PDF

Loeffler, M. and Hudson, R. L. (2012). Thermal Regeneration of Sulfuric Acid Hydrates after Irradiation. Icarus, 219, 561-566. PDF

Loeffler, M., Hudson, R. L., Moore, M. H., and Carlson, R. W. (2011). Radiolysis of Sulfuric Acid, Sulfuric Acid Monohydrate, and Sulfuric Acid Tetrahydrate and its Relevance to Europa. Icarus, 215, 370-380. PDF

Loeffler, M. and Hudson, R. L. (2010). Thermally-Induced Chemistry and the Jovian Icy Satellites: A Laboratory Study of the Formation of Sulfur Oxyanions. Geophysical Research Letters, 37, 19201. PDF

Moore, M. H., Ferrante, R. F., Moore, W. J., and Hudson, R. L. (2010). Infrared Spectra and Optical Constants of Nitrile Ices Relevant to Titan's Atmosphere. The Astrophysical Journal - Supplement, 191, 96-112. PDF

Cooper, P. D., Moore, M. H., and Hudson, R. L. (2010). O-atom Production in Water Ice: Implications for O2 Formation on Icy Satellites. J. Geophys. Res.. 115, E10013.

Peeters, Z., Hudson, R.L., Moore, M.H., and Lewis, A. (2010). The Formation and Stability of Carbonic Acid on Outer Solar System Bodies. Icarus, 210, 480-487.

Hudson, R. L., Lewis, A. S., Moore, M. H., Dworkin, J. P., and Martin, M. P. (2009). Enigmatic Isovaline: Investigating the Stability, Racemization, and Formation of a Non-Biological Meteoritic Amino Acid. Chapter in Bioastronomy 2007: Molecules, Microbes, and Extraterrestrial Life, Astronomical Society of the Pacific.

Carlson, R. W., Calvin, W. M., Dalton, J. B., Hansen, G. B., Hudson, R. L., Johnson, R. E., McCord, T. B., and Moore, M. H. (2009). Europa's Surface Composition. Chapter in Europa, University of Arizona Press.

Hudson, R. L., Moore, M. H., and Raines, L. L. (2009). Ethane Ices in the Outer Solar System: Spectroscopy and Chemistry. Icarus, 203, 677-680.

Hudson, R. L., Moore, M. H., Dworkin, J. P., Martin, M. P., and Pozun, Z. D. (2008). Amino Acids from Ion-Irradiated Nitrile-Containing Ices. Astrobiology, 8, 771-779.

Ferrante, R. F., Moore, M. H., Spiliotis, M. M., and Hudson, R. L. (2008). Formation of Interstellar OCS: Radiation Chemistry and IR Spectra of Precursor Ices. Astrophysical Journal, 684, 1210-1220. PDF

Hudson, R. L., Palumbo, M. E, Strazzulla, G., Moore, M. H., Cooper, J., and Sturmer, S. J. (2008). Laboratory Studies of the Chemistry of TNO Surface Materials. Chapter in The Solar System Beyond Neptune, University of Arizona Press. PDF

Cooper, P. D., Moore, M. H., and Hudson, R. L. (2008). Radiation Chemistry of H2O + O2 Ices. Icarus, 194, 379-388. PDF

Moore, M. H., Ferrante, R. F., Hudson, R. L., and Stone, J. N. (2007). Ammonia - Water Ice Laboratory Studies Relevant to Outer Solar System Surfaces. Icarus, 190, 260-273. PDF

Moore, M. H., Hudson, R. L., and Carlson, R. W. (2007). The Radiolysis of SO2 and H2S in Water Ice: Implications for the Icy Jovian Satellites. Icarus, 189, 409-423. PDF

Cooper, P. D., Moore, M. H., and Hudson, R. L. (2006). Infrared Detection of HO2 and HO3 Radicals in Water Ice. J. Phys. Chem. A, 110, 7985-7988. PDF

Hudson, R. L. and Moore, M. H. (2006). Infrared Spectra and Radiation Stability of H2O2 Ices Relevant to Europa. Astrobiology, 6, 483-489. PDF

Hudson, R. L. (2006). Astrochemistry Examples in the Classroom. Journal of Chemical Education, 83, 1611-1615. PDF

Moore, M. H. and Hudson, R. L. (2006). Production of Complex Molecules in Astrophysical Ices. Astrochemistry: Recent Successes and Current Challenges, Proceedings IAU Sym. 231, Cambridge University Press, pp. 247-260. PDF

Hudson, R. L., Khanna, R. K., and Moore, M. H. (2005). Laboratory Evidence for Solid-Phase Protonation of HNCO in Interstellar Ices. Astrophysical Journal - Supplement Series, 159, 277-281. PDF

Hudson, R. L., Moore, M. H., and Cook, A. M. (2005). IR Characterization and Radiation Chemistry of Glycolaldehyde and Ethylene Glycol Ices. Advances in Space Research, 36, 184-189. PDF

Ruiterkamp, R., Peeters, Z., Moore, M. H., Hudson, R. L., and Ehrenfreund, P. (2005). A Quantitative Study of Proton Irradiation and UV Photolysis of Benzene in Interstellar Environments. Astronomy & Astrophysics , 440, 391-402. PDF

Colangeli, L., Brucato, J. R., Bar-Nun, A., Hudson, R. L., and Moore, M. H. (2005). Laboratory Experiments on Cometary Materials. Chapter in Comets II, University of Arizona Press, pp. 695-717. PDF

Hudson, R. L. and Moore, M. H. (2004). Reactions of Nitriles in Ices Relevant to Titan, Comets, and the Interstellar Medium: Formation of Cyanate Ion, Ketenimines, and Isonitriles. Icarus, 172, 466-478. PDF

Gerakines, P. A., Moore, M. H., and Hudson, R. L. (2004). Ultraviolet Photolysis and Proton Irradiation of Astrophysical Ice Analogs Containing Hydrogen Cyanide. Icarus, 170, 204-213. PDF

Moore, M. H., Hudson, R. L., and Ferrante, R. F. (2003). Radiation Products in Processed Ices Relevant to Edgeworth-Kuiper-Belt Objects. Earth, Moon, and Planets, 92, 291-306. PDF

Cottin, H., Moore, M. H., and Benilan, Y. (2003). Photodestruction of Relevant Interstellar Molecules in Ice Mixtures. Astrophysical Journal, 590, 874-881. PDF

Hudson, R. L. and Moore, M. H. (2003). Solid-Phase Formation of Interstellar Vinyl Alcohol. Astrophysical Journal, 586, L107-L110. PDF

Moore, M. H. and Hudson, R. L. (2003). Infrared Study of Ion-Irradiated N2-Dominated Ices Relevant to Triton and Pluto: Formation of HCN and HNC. Icarus, 161, 486-500. PDF

Hudson, R. L. and Moore, M. H. (2002). The N3 Radical as a Discriminator Between Ion-Irradiated and UV-Photolyzed Astronomical Ices. Astrophysical Journal, 568, 1095-1099. PDF

Lowenthal, M. S., Khanna, R. K., and Moore, M. H. (2002). Infrared Spectrum of Solid Isocyanic Acid (HNCO): Vibrational Assignments and Integrated Band Intensities. Spectrochimica Acta, 58, 73-78. PDF

Gerakines, P. A. and Moore, M. H. (2001). Carbon Suboxide in Astrophysical Ice Analogs. Icarus, 154, 372-380. PDF

Gerakines, P. A., Moore, M. H., and Hudson, R. L. (2001). Energetic Processing of Laboratory Ice Analogs: UV Photolysis vs. Ion Bombardment. JGR-Planets, 106, 33381-33386. PDF

Hudson, R. L,. Moore, M. H., and Gerakines, P. A. (2001). Radiation Chemical Alterations in Solar System Ices: An Overview. JGR-Planets, 106, 33275-33284. PDF

Cottin, H., Szopa, C., and Moore, M. H. (2001). Production of Hexamethylenetetramine in Photolyzed and Irradiated Interstellar Cometary Ice Analogs. Astrophysical Journal Letters, 561, L139-L142. PDF

Hudson, R. L., Moore, M. H., and Gerakines, P. A. (2001). The Formation of Cyanate Ion (OCN-) in Interstellar Ice Analogues. Astrophysical Journal, 550, 1140-1150. PDF

Moore, M. H., Hudson, R. L., and Gerakines, P. A. (2001). Mid- and Far-Infrared Spectroscopic Studies of the Influence of Temperature, UV Photolysis and Ion Bombardment on Cosmic-Type Ices. Spectrochimica Acta, 57A, 843-858. PDF

Gerakines, P. A., Moore, M. H., and Hudson, R. L. (2000). Carbonic Acid Production in H2O + CO2 Ices: UV Photolysis vs. Proton Bombardment. Astronomy & Astrophysics, 357, 793-800. PDF

Hudson, R. L. and Moore, M. H. (2000). New Experiments and Interpretations Concerning the OCN- Band in Interstellar Ice Analogues. Astronomy & Astrophysics, 357, 787-792. PDF

Hudson, R. L. and Moore, M. H. (2000). IR Spectra of Irradiated Cometary Ice Analogues Containing Methanol: A New Assignment, A Reassignment, and a Non-Assignment. Icarus, 145, 661-663. PDF

Moore, M. H. and Hudson R. L. (2000). IR Detection of H2O2 at 80 K in Ion-Irradiated Laboratory Ices Relevant to Europa. Icarus, 145, 282-288. PDF

Ferrante, R. F., Moore, M. H., Nuth III, J. A., and Smith, T. (2000). Formation of Carbon Compounds by Catalytic Conversion of CO on Laboratory Grain Analogs Containing Iron. Icarus, 145, 297-300. PDF

Hudson, R. L. and Moore, M. H. (1999). Laboratory Studies of the Formation of Methanol and Other Organic Molecules by Water + Carbon Monoxide Radiolysis: Relevance to Comets, Icy Satellites, and Interstellar Ices. Icarus, 140, 451-461. PDF

Khanna, R. K. and Moore, M. H. (1999). Carbamic acid: Molecular Structure and IR Spectra. Spectrochimica Acta, 55A, 961-967. PDF

Moore, M. H. and Hudson R. L. (1998). Infrared Study of Ion Irradiated Water Ice Mixtures with Organics Relevant to Comets. Icarus, 135, 518-527. PDF

Hudson R. L. and Moore, M. H. (1997). Hydrocarbon Radiation Chemistry in Ices of Cometary Relevance. Icarus, 126, 233-235. PDF

Moore, M. H., Ferrante, R. F., and Nuth, J. A., III (1996). Infrared Spectra of Proton Irradiated Ices Containing Methanol. Planetary and Space Science, 44, 927-935. PDF

Hudson, R. L. and Moore, M. H. (1995). Far-IR Spectral Changes Accompanying Proton Irradiation of Solids of Astrochemical Interest. Radiation Physics and Chemistry, 45, 779-789. PDF

Moore, M. H., Ferrante, R. F., Hudson, R. L., Nuth, J. A., III, and Donn, B. (1994). Infrared Spectra of Crystalline Phase Ices Condensed on Silicate Smokes at T < 20 K. Astrophysical Journal Letters, 428, L81-L84. PDF

Moore, M. H. and Hudson, R. L. (1994). Far-Infrared Spectra of Cosmic-Type Pure and Mixed Ices. Astronomy & Astrophysics Supplement Series, 103, 45-56. PDF

Hudson, R. L. and Moore, M. H. (1993). Far-Infrared Investigations of a Methanol Clathrate Hydrate: Implications for Astronomical Observations. Astrophysical Journal Letters, 404, L29-L32. PDF

DelloRusso, N., Khanna, R. K., and Moore, M. H. (l993). Identification and Yield of Carbonic Acid and Formaldehyde in Irradiated Ices. JGR-Planets, 98, E3, 5505-5510. PDF

Moore, M. H. and Hudson, R. L. (1992). Far-Infrared Spectral Studies of Phase Changes in Water Ice Induced by Proton Irradiation. Astrophysical Journal, 401, 353-360. PDF

Hudson, R. L. and Moore, M. H. (1992). A Far-IR Study of Irradiated Amorphous Ice: An Unreported Oscillation Between Amorphous and Crystalline Phases. Journal of Physical Chemistry, 96, 6500-6504. PDF

Nichols, R. H., Nuth III, J. A., Hohenberg, C. M., Olinger, C. T., and Moore, M. H. (1992). Trapping of Noble Gases in Proton-Irradiated Silicate Smokes. Meteroritics, 27, 555-559. PDF

Nuth, J. A. , Moore, M. H., Tanabe, T., and Kraus, G. (1992). The SiH Vibrational Fundamental as an Indicator of the Oxidation State of Silicon in a Cometary or Asteroidal Regolith. Icarus, 98, 207-210.

Hudson, R. L. and Donn, B. (1992). Comments on 'Gas Release from Comets' and Related Trapped-Gas Experiments. Icarus, 96, 286-288. PDF

Hudson, R. L. and Donn, B. (1991). An Experimental Study of the Sublimation of Water Ice and the Release of Trapped Gases. Icarus, 94, 326-332. PDF

Moore, M. H., Khanna, K., and Donn, B. (l991). Studies Of Proton Irradiated H2O+CO2 and H2O+CO Ices and Analysis of Synthesized Molecules. JGR-Planets, 96, 17541-17545. PDF

Moore, M. H., Tanabe, T., and Nuth, J. (l991). The SiH Vibrational Stretch as an Indicator of the Chemical State of Interstellar Grains. Astrophysical Journal, 373, L31-L34. PDF

Moore, M. H. and Khanna, R. (1991). Infrared and Mass Spectral Studies of Proton Irradiated H2O+CO2 Ice: Evidence for Carbonic Acid. Spectrochimica Acta, 47A, 255-262. PDF

Moore, M. H. and Tanabe, T. (1990). Mass Spectra of Sputtered Polyoxymethylene--Implications For Comets. Astrophysical Journal Letters, 365, L39-L42. PDF

Wdowiak, T., Donn, B., Nuth, J., Chappelle, E., and Moore, M. (1989).Laboratory Experiments on Carbonaceous Material as a Source for the Red Rectangle Visual Emissions. Astrophysical Journal, 336, 838-842. PDF

Nuth, J. and Moore, M. H. (1988). SiH and the Unidentified 4.6 Micron Feature. Astrophysical Journal, 329, L113-L116. PDF

Nuth, J. A., Nelson, R. N., Moore, M. H., and Donn, B. (1988). Experimental Studies of Circumstellar, Interstellar and Interplanetary Refractory Grains Analogs. In: Experiments on Cosmic Dust Analogues (ed. Bussoletti, et al.) Kluwer Acad. Pub., 191-207.

Moore, M. H., Donn, B., and Hudson, R. L. (1988). Study of S2 in Ices: Implications for Comets. Icarus, 74, 399-412. PDF

Moore, M. H. (1984). Infrared Studies of Proton Irradiated SO2 Ices: Implications for Io. Icarus, 59, 114-128. PDF

Moore, M. H., Donn, B., Khanna, R., and A'Hearn, M. F. (1983). Studies of Proton Irradiated Cometary-Type Ice Mixtures. Icarus, 54, 388-405. PDF

Moore, M. H. and Donn, B.(1982). The Infrared Spectrum of a Laboratory-Synthesized Residue: Implications for the 3.4 Micron Interstellar Absorption Feature. Astrophysical Journal, 257, L47-L50. PDF



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