Alexander Anatolevich Pavlov
((AST, PLANETARY STUDIES))
| Email: | alexander.pavlov@nasa.gov |
| Phone: | 301.614.5945 |
| Org Code: | |
| Address: |
NASA/GSFC Mail Code 699 Greenbelt, MD 20771 |
| Employer: |
Brief Bio
Education
St. Petersburg State Technical University BS (physics) 1994
St. Petersburg, Russia
St. Petersburg State Technical University MS (space physics) 1996
St. Petersburg, Russia
Pennsylvania State University, PA USA MS (atmospheric science) 2000
Pennsylvania State University, PA USA PhD (Geosciences) 2001
Appointments and Positions
Employment History
2009 – present
Space Scientist
Planetary Environments Laboratory
NASA Goddard Space Flight Center
Greenbelt, MD USA
2004 – 2009
Assistant Professor
Lunar and Planetary Laboratory,
University of Arizona
Tucson, AZ USA
2001 – 2004
Postdoc Research Associate
Laboratory of atmospheric and Space Physics
University of Colorado at Boulder
Boulder, CO USA
1997 – 2001
Research Assistant
Department of Geosciences
Pennsylvania State University,
PA USA
Positions/Employment
Space Scientist
NASA Goddard Space Flight Center - Greenbelt Maryland
February 2009 - Present
Education
St. Petersburg State Technical University, M.S. (Space Physics) 1996
Pennsylvania State University, M.S. (Atmospheric Science) 2001
Pennsylvania State University, Ph.D. (Geosciences) 2001
Publications
Refereed
2026. "Does the Measured Abundance Suggest a Biological Origin for the Ancient Alkanes Preserved in a Martian Mudstone?.", Astrobiology, 26 (2): 154-161 [10.1177/15311074261417879] [Journal Article/Letter]
2025. "Slow Radiolysis of Amino Acids in Mars-Like Permafrost Conditions: Applications to the Search for Extant Life on Mars.", Astrobiology, 25 (9): 601-610 [10.1177/15311074251366249] [Journal Article/Letter]
2024. "Organic Products of Fatty Acid and Magnesium Sulfate Mixtures after Gamma Radiolysis: Implications for Missions to Europa.", Astrobiology, 126 (4): e2020JE006803 [Full Text] [10.1089/ast.2024.0047] [Journal Article/Letter]
2024. "Rapid Destruction of Lipid Biomarkers Under Simulated Cosmic Radiation.", Astrobiology, 24 (11): 1063-1073 [10.1089/ast.2024.0006] [Journal Article/Letter]
2024. "Highly enriched carbon and oxygen isotopes in carbonate-derived CO2 at Gale crater, Mars.", PNAS, 121 (42): e2321342121 [Full Text] [10.1073/pnas.2321342121] [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. "Radiolytic Effects on Biological and Abiotic Amino Acids in Shallow Subsurface Ices on Europa and Enceladus.", Astrobiology, 24 (7): 698-709 [10.1089/ast.2023.0120] [Journal Article/Letter]
2024. "Formation and Stability of Salty Soil Seals in Mars‐Like Conditions. Implications for Methane Variability on Mars.", Journal of Geophysical Research: Planets, 129 (3): [10.1029/2023je007841] [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. "Diagnostic biosignature transformation under simulated martian radiation in organic-rich sedimentary rocks.", Frontiers in Astronomy and Space Sciences, 9 [10.3389/fspas.2022.919828] [Journal Article/Letter]
2022. "Depleted carbon isotope compositions observed at Gale crater, Mars.", Proceedings of the National Academy of Sciences, 119 (4): e2115651119 [Full Text] [10.1073/pnas.2115651119] [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. "Large sulfur isotope fractionations in Martian sediments at Gale crater.", Nature Geoscience, 10 658–662 [Full Text] [10.1038/ngeo3002] [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 imprint of atmospheric evolution in the D/H of Hesperian clay minerals on Mars.", Science, 347 (6220): 412-414 [Full Text] [10.1126/science.1260291] [Journal Article/Letter]
2014. "Alteration of the carbon and nitrogen isotopic composition in the Martian surface rocks due to cosmic ray exposure.", Journal of Geophysical Research: Planets, 119 (6): 1390-1402 [10.1002/2014je004615] [Journal Article/Letter]
2014. "Volatile and Organic Compositions of Sedimentary Rocks in Yellowknife Bay, Gale Crater, Mars.", Science, 343 (6169): 1245267 [Full Text] [doi:10.1126/science.1245267] [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 (1): 237-254 [Full Text] [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. "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. "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. "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. "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]
2009. "Reduction in Haze Formation Rate on Prebiotic Earth in the Presence of Hydrogen.", Astrobiology, 9 447 - 453 [Journal Article/Letter]
2006. "Organic Haze on Titan and the Early Earth.", Proceedings of the National Academy of the Sciences, 103 18035 - 18042 [Journal Article/Letter]
2005. "Passing through a giant molecular cloud: “Snowball” glaciations produced by interstellar dust.", Geophysical Research Letters, 32 (3): [10.1029/2004gl021890] [Journal Article/Letter]
2005. "Catastrophic ozone loss during passage of the Solar system through an interstellar cloud. .", Geophysical Research Letters, 32 [10.1029/2004GL021601] [Journal Article/Letter]
2004. "Chemical Composition of Titan's Haze: Are PAH's present?.", Geophysical Research Letters, 31 L17S08 [doi:10.1029/2004GL019859] [Journal Article/Letter]
2004. "Haze Aerosols in the Atmosphere of Early Earth: Manna from Heaven.", Astrobiology, 4 409 - 419 [Journal Article/Letter]
2003. "New insights into Archean sulfur cycle from mass-independent sulfur isotope records from the Hamersley Basin, Australia.", Earth and Planetary Science Letters, 213 (1-2): 15-30 [10.1016/S0012-821X(03)00295-4] [Journal Article/Letter]
2001. "Organic haze in Earth's early atmosphere: Source of low-13C Late Archean kerogens?.", Geology, 29 (11): 1003 [10.1130/0091-7613(2001)029<1003:ohiese>2.0.co;2] [Journal Article/Letter]
2001. "Organic haze in Earth’s early atmosphere: Source of low-13C Late Archean kerogens?.", Geology, 29 1003-1006 [Journal Article/Letter]
Non-Refereed
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]