Hannah H Kaplan

Hannah H Kaplan

  • RESEARCH SPACE SCIENTIST
  • 301.614.6245
  • NASA/GSFC
  • Mail Code: 693
  • Greenbelt , MD 20771
  • Employer: NASA
  • Brief Bio

    I am a Research Space Scientist in the Planetary Systems Lab at the NASA Goddard Space Flight Center. I received my PhD in Earth, Environmental and Planetary Sciences from Brown University in 2018. Prior to coming to NASA, I was a postdoc on the OSIRIS-REx mission.

    My scientific research involves remotely characterizing the chemistry and mineralogy of planetary surfaces. I have worked with visible – near-infrared spectral data from multiple spacecraft and am particularly interested in infrared spectroscopy of organics, connecting laboratory and spacecraft spectral data, and spectroscopy of carbonaceous asteroids and meteorites. 

    Research Interests

    Remote Sensing of Planetary Surfaces

    My research focuses on remotely characterizing the composition of planetary surfaces. I primarily use visible - near-infrared spectroscopy to answer a wide range of questions to better understand geologic history in our Solar System. Major themes include: 1) using reflectance spectroscopy as a quantitative technique 2) studying reflectance and scattering properties of geologic materials in the laboratory, 3) mapping composition at micron (e.g. hand sample) to kilometer (e.g. planetary surface) scales, and 4) linking laboratory, field, and orbital remote sensing datasets.

    Composition of Primitive Bodies

    The composition of primitive materials/bodies tells us about early solar system processes, the composition of the solar nebula, and the building blocks of Earth and other planets. I'm particularly interested in detecting and mapping organic materials on asteroids to better understand the abundance and composition of organics, which may be similar to those delivered to early Earth. Major research themes include: 1) early solar system processes including aqueous and thermal alteration and their impact on mineralogy and organics, 2) distribution of carbon in the early solar system, and 3) remote characteriziation of organics.

    Spacecraft Missions to Small Bodies and Beyond

    Missions like OSIRIS-REx have proved how much information can be gained from flyby and orbital observations. More missions are needed to understand the composition and history of our Solar System.

    Positions/Employment

    4/2020 - Present

    Research Space Scientist

    NASA Goddard Space Flight Center, Greenbelt, MD
    4/2018 - 4/2020

    Postdoctoral Researcher

    Southwest Research Institute, Boulder, CO
    8/2013 - 4/2018

    Research Assistant

    Brown University, Providence, RI

    Education

    Ph.D. Earth, Environmental, and Planetary Sciences, Brown University (2018) Dissertation: Reflectance Spectroscopy of Organic Bearing Rocks with Applications to Laboratory and Spacecraft Data

    M.Sc. Earth, Environmental, and Planetary Sciences, Brown University (2015)

    B.A. Earth and Planetary Sciences, Washington University in St. Louis (2013)

    Publications

    Refereed

    Simon, A. A., H. H. Kaplan, V. E. Hamilton, et al. D. S. Lauretta, H. Campins, J. P. Emery, M. A. Barucci, D. N. DellaGiustina, D. C. Reuter, S. A. Sandford, D. R. Golish, L. F. Lim, A. Ryan, B. Rozitis, and C. A. Bennett. 2020. "Widespread carbon-bearing materials on near-Earth asteroid (101955) Bennu." Science, eabc3522 (In Press) [10.1126/science.abc3522]

    DellaGiustina, D. N., K. N. Burke, K. J. Walsh, et al. P. H. Smith, D. R. Golish, E. B. Bierhaus, R.-L. Ballouz, T. L. Becker, H. Campins, E. Tatsumi, K. Yumoto, S. Sugita, J. D. Deshapriya, E. A. Cloutis, B. E. Clark, A. R. Hendrix, A. Sen, M. M. Al Asad, M. G. Daly, D. M. Applin, C. Avdellidou, M. A. Barucci, K. J. Becker, C. A. Bennett, W. F. Bottke, J. I. Brodbeck, H. C. Connolly, M. Delbo, J. de Leon, C. Y. Drouet d’Aubigny, K. L. Edmundson, S. Fornasier, V. E. Hamilton, P. H. Hasselmann, C. W. Hergenrother, E. S. Howell, E. R. Jawin, H. H. Kaplan, L. Le Corre, L. F. Lim, J. Y. Li, P. Michel, J. L. Molaro, M. C. Nolan, J. Nolau, M. Pajola, A. Parkinson, M. Popescu, N. A. Porter, B. Rizk, J. L. Rizos, A. J. Ryan, B. Rozitis, N. K. Shultz, A. A. Simon, D. Trang, R. B. Van Auken, C. W. Wolner, and D. S. Lauretta. 2020. "Variations in color and reflectance on the surface of asteroid (101955) Bennu." Science, eabc3660 (In Press) [10.1126/science.abc3660]

    Kaplan, H. H., D. S. Lauretta, A. A. Simon, et al. V. E. Hamilton, D. N. DellaGiustina, D. R. Golish, D. C. Reuter, C. A. Bennett, K. N. Burke, H. Campins, H. C. Connolly, J. P. Dworkin, J. P. Emery, D. P. Glavin, T. D. Glotch, R. Hanna, K. Ishimaru, E. R. Jawin, T. J. McCoy, N. Porter, S. A. Sandford, S. Ferrone, B. E. Clark, J.-Y. Li, X.-D. Zou, M. G. Daly, O. S. Barnouin, J. A. Seabrook, and H. L. Enos. 2020. "Bright carbonate veins on asteroid (101955) Bennu: Implications for aqueous alteration history." Science, eabc3557 [Full Text (Link)] [10.1126/science.abc3557]

    Rozitis, B., A. J. Ryan, J. P. Emery, et al. P. R. Christensen, V. E. Hamilton, A. A. Simon, D. C. Reuter, M. Al Asad, R.-L. Ballouz, J. L. Bandfield, O. S. Barnouin, C. A. Bennett, M. Bernacki, K. N. Burke, S. Cambioni, B. E. Clark, M. G. Daly, M. Delbo, D. N. DellaGiustina, C. M. Elder, R. D. Hanna, C. W. Haberle, E. S. Howell, D. R. Golish, E. R. Jawin, H. H. Kaplan, L. F. Lim, J. L. Molaro, D. P. Munoz, M. C. Nolan, B. Rizk, M. A. Siegler, H. C. Susorney, K. J. Walsh, and D. S. Lauretta. 2020. "Asteroid (101955) Bennu’s weak boulders and thermally anomalous equator." Science Advances, 6 (41): eabc3699 [10.1126/sciadv.abc3699]

    DellaGiustina, D. N., H. H. Kaplan, A. A. Simon, et al. W. F. Bottke, C. Avdellidou, M. Delbo, R.-L. Ballouz, D. R. Golish, K. J. Walsh, M. Popescu, H. Campins, M. A. Barucci, G. Poggiali, R. T. Daly, L. Le Corre, V. E. Hamilton, N. Porter, E. R. Jawin, T. J. McCoy, H. C. Connolly, J. L. Garcia, E. Tatsumi, J. de Leon, J. Licandro, S. Fornasier, M. G. Daly, M. M. Al Asad, L. Philpott, J. Seabrook, O. S. Barnouin, B. E. Clark, M. C. Nolan, E. S. Howell, R. P. Binzel, B. Rizk, D. C. Reuter, and D. S. Lauretta. 2020. "Exogenic basalt on asteroid (101955) Bennu." Nature Astronomy, [10.1038/s41550-020-1195-z]

    Jawin, E. R., K. J. Walsh, O. S. Barnouin, et al. T. J. McCoy, R. Ballouz, D. N. DellaGiustina, H. C. Connolly, J. Marshall, C. Beddingfield, M. C. Nolan, J. L. Molaro, C. A. Bennett, D. J. Scheeres, M. G. Daly, M. Al Asad, R. T. Daly, E. B. Bierhaus, H. C. Susorney, H. H. Kaplan, H. L. Enos, and D. S. Lauretta. 2020. "Global Patterns of Recent Mass Movement on Asteroid (101955) Bennu." Journal of Geophysical Research: Planets, 125 (9): [10.1029/2020je006475]

    Kaplan, H. H., V. E. Hamilton, E. S. Howell, et al. S. F. Anderson, M. A. Barrucci, J. Brucato, T. H. Burbine, B. E. Clark, E. A. Cloutis, H. C. Connolly, E. Dotto, J. P. Emery, S. Fornasier, C. Lantz, L. F. Lim, F. Merlin, A. Praet, D. C. Reuter, S. A. Sandford, A. A. Simon, D. Takir, and D. S. Lauretta. 2020. "Visible–near infrared spectral indices for mapping mineralogy and chemistry with OSIRIS ‐ RE x." Meteoritics & Planetary Science, maps.13461 [10.1111/maps.13461]

    Hamilton, V. E., the OSIRIS-REx Team, A. A. Simon, et al. P. R. Christensen, D. C. Reuter, B. E. Clark, M. A. Barucci, N. E. Bowles, W. V. Boynton, J. R. Brucato, E. A. Cloutis, H. C. Connolly, K. L. Donaldson Hanna, J. P. Emery, H. L. Enos, S. Fornasier, C. W. Haberle, R. D. Hanna, E. S. Howell, H. H. Kaplan, L. P. Keller, C. Lantz, J.-Y. Li, L. F. Lim, T. J. McCoy, F. Merlin, M. C. Nolan, A. Praet, B. Rozitis, S. A. Sandford, D. L. Schrader, C. A. Thomas, X.-D. Zou, and D. S. Lauretta. 2019. "Evidence for widespread hydrated minerals on asteroid (101955) Bennu." Nature Astronomy, 3 (4): 332-340 [10.1038/s41550-019-0722-2]

    DellaGiustina, D. N., The OSIRIS-REx Team, J. P. Emery, et al. D. R. Golish, B. Rozitis, C. A. Bennett, K. N. Burke, R.-L. Ballouz, K. J. Becker, P. R. Christensen, C. Y. Drouet d’Aubigny, V. E. Hamilton, D. C. Reuter, B. Rizk, A. A. Simon, E. Asphaug, J. L. Bandfield, O. S. Barnouin, M. A. Barucci, E. B. Bierhaus, R. P. Binzel, W. F. Bottke, N. E. Bowles, H. Campins, B. C. Clark, B. E. Clark, H. C. Connolly, M. G. Daly, J. D. Leon, M. Delbo’, J. D. Deshapriya, C. M. Elder, S. Fornasier, C. W. Hergenrother, E. S. Howell, E. R. Jawin, H. H. Kaplan, T. R. Kareta, L. Le Corre, J.-Y. Li, J. Licandro, L. F. Lim, P. Michel, J. Molaro, M. C. Nolan, M. Pajola, M. Popescu, J. L. Garcia, A. Ryan, S. R. Schwartz, N. Shultz, M. A. Siegler, P. H. Smith, E. Tatsumi, C. A. Thomas, K. J. Walsh, C. W. Wolner, X.-D. Zou, and D. S. Lauretta. 2019. "Properties of rubble-pile asteroid (101955) Bennu from OSIRIS-REx imaging and thermal analysis." Nature Astronomy, 3 (4): 341-351 [10.1038/s41550-019-0731-1]

    Lauretta, D. S., D. N. DellaGiustina, C. A. Bennett, et al. D. R. Golish, K. J. Becker, S. S. Balram-Knutson, O. S. Barnouin, T. L. Becker, W. F. Bottke, W. V. Boynton, H. Campins, B. E. Clark, H. C. Connolly, C. Y. Drouet d’Aubigny, J. P. Dworkin, J. P. Emery, H. L. Enos, V. E. Hamilton, C. W. Hergenrother, E. S. Howell, M. R. Izawa, H. H. Kaplan, M. C. Nolan, B. Rizk, H. L. Roper, D. J. Scheeres, P. H. Smith, K. J. Walsh, C. W. Wolner, The OSIRIS-REx Team, and L. F. Lim. 2019. "The unexpected surface of asteroid (101955) Bennu." Nature, 568 (7750): 55-60 [Full Text (Link)] [10.1038/s41586-019-1033-6]

    Kaplan, H. H., R. E. Milliken, C. M. Alexander, and C. D. Herd. 2019. "Reflectance spectroscopy of insoluble organic matter (IOM) and carbonaceous meteorites." Meteoritics & Planetary Science, 54 (5): 1051-1068 [10.1111/maps.13264]

    Marchi, S., A. Raponi, T. H. Prettyman, et al. M. C. De Sanctis, J. Castillo-Rogez, C. A. Raymond, E. Ammannito, T. Bowling, M. Ciarniello, H. Kaplan, E. Palomba, C. T. Russell, V. Vinogradoff, and N. Yamashita. 2018. "An aqueously altered carbon-rich Ceres." Nature Astronomy, 3 (2): 140-145 [10.1038/s41550-018-0656-0]

    Deutsch, A. N., J. W. Head, K. R. Ramsley, et al. C. M. Pieters, R. W. Potter, A. M. Palumbo, M. S. Bramble, J. P. Cassanelli, E. R. Jawin, L. M. Jozwiak, H. H. Kaplan, C. F. Lynch, A. C. Pascuzzo, L. Qiao, and D. K. Weiss. 2018. "Science exploration architecture for Phobos and Deimos: The role of Phobos and Deimos in the future exploration of Mars." Advances in Space Research, 62 (8): 2174-2186 [10.1016/j.asr.2017.12.017]

    Kaplan, H. H., R. E. Milliken, and C. M. Alexander. 2018. "New Constraints on the Abundance and Composition of Organic Matter on Ceres." Geophysical Research Letters, 45 (11): 5274-5282 [10.1029/2018gl077913]

    Kaplan, H. H., and R. E. Milliken. 2018. "Reflectance spectroscopy of organic matter in sedimentary rocks at mid-infrared wavelengths." Clays and Clay Minerals, 66 (2): 173-189 [10.1346/ccmn.2018.064092]

    Kaplan, H. H., R. E. Milliken, D. Fernández-Remolar, et al. R. Amils, K. Robertson, and A. H. Knoll. 2016. "Orbital evidence for clay and acidic sulfate assemblages on Mars based on mineralogical analogs from Rio Tinto, Spain." Icarus, 275: 45-64 [10.1016/j.icarus.2016.03.019]

    Kaplan, H. H., and R. E. Milliken. 2016. "Reflectance Spectroscopy for Organic Detection And Quantification in Clay-bearing Samples: Effects of Albedo, Clay Type, and Water Content." Clays and Clay Minerals, 64 (2): 167-184 [10.1346/ccmn.2016.0640207]

    Talks, Presentations and Posters

    Invited

    Mapping Spectral Units on (101955) Bennu

    2019

    EPSC-DPS Joint Conference

    New Constraints on the Abundance and Composition of Organic Matter on Ceres

    2018

    Friends of Lunar Volatiles

    Reflectance Spectroscopy of Carbonaceous Meteorites and Insoluble Organic Matter

    2018

    SSERVI Carbon Workshop

    Reflectance Spectroscopy of Organic-Bearing Rocks: From Earth to the Asteroid Belt

    2018

    Southwest Research Institute

    Infrared Spectroscopy of Organics from Earth and Beyond

    2017

    Schlumberger-Doll Research Center

    Brief Bio

    I am a Research Space Scientist in the Planetary Systems Lab at the NASA Goddard Space Flight Center. I received my PhD in Earth, Environmental and Planetary Sciences from Brown University in 2018. Prior to coming to NASA, I was a postdoc on the OSIRIS-REx mission.

    My scientific research involves remotely characterizing the chemistry and mineralogy of planetary surfaces. I have worked with visible – near-infrared spectral data from multiple spacecraft and am particularly interested in infrared spectroscopy of organics, connecting laboratory and spacecraft spectral data, and spectroscopy of carbonaceous asteroids and meteorites. 

    Publications

    Refereed

    Simon, A. A., H. H. Kaplan, V. E. Hamilton, et al. D. S. Lauretta, H. Campins, J. P. Emery, M. A. Barucci, D. N. DellaGiustina, D. C. Reuter, S. A. Sandford, D. R. Golish, L. F. Lim, A. Ryan, B. Rozitis, and C. A. Bennett. 2020. "Widespread carbon-bearing materials on near-Earth asteroid (101955) Bennu." Science (In Press) eabc3522 [10.1126/science.abc3522]

    DellaGiustina, D. N., K. N. Burke, K. J. Walsh, et al. P. H. Smith, D. R. Golish, E. B. Bierhaus, R.-L. Ballouz, T. L. Becker, H. Campins, E. Tatsumi, K. Yumoto, S. Sugita, J. D. Deshapriya, E. A. Cloutis, B. E. Clark, A. R. Hendrix, A. Sen, M. M. Al Asad, M. G. Daly, D. M. Applin, C. Avdellidou, M. A. Barucci, K. J. Becker, C. A. Bennett, W. F. Bottke, J. I. Brodbeck, H. C. Connolly, M. Delbo, J. de Leon, C. Y. Drouet d’Aubigny, K. L. Edmundson, S. Fornasier, V. E. Hamilton, P. H. Hasselmann, C. W. Hergenrother, E. S. Howell, E. R. Jawin, H. H. Kaplan, L. Le Corre, L. F. Lim, J. Y. Li, P. Michel, J. L. Molaro, M. C. Nolan, J. Nolau, M. Pajola, A. Parkinson, M. Popescu, N. A. Porter, B. Rizk, J. L. Rizos, A. J. Ryan, B. Rozitis, N. K. Shultz, A. A. Simon, D. Trang, R. B. Van Auken, C. W. Wolner, and D. S. Lauretta. 2020. "Variations in color and reflectance on the surface of asteroid (101955) Bennu." Science (In Press) eabc3660 [10.1126/science.abc3660]

    Kaplan, H. H., D. S. Lauretta, A. A. Simon, et al. V. E. Hamilton, D. N. DellaGiustina, D. R. Golish, D. C. Reuter, C. A. Bennett, K. N. Burke, H. Campins, H. C. Connolly, J. P. Dworkin, J. P. Emery, D. P. Glavin, T. D. Glotch, R. Hanna, K. Ishimaru, E. R. Jawin, T. J. McCoy, N. Porter, S. A. Sandford, S. Ferrone, B. E. Clark, J.-Y. Li, X.-D. Zou, M. G. Daly, O. S. Barnouin, J. A. Seabrook, and H. L. Enos. 2020. "Bright carbonate veins on asteroid (101955) Bennu: Implications for aqueous alteration history." Science eabc3557 [Full Text (Link)] [10.1126/science.abc3557]

    Rozitis, B., A. J. Ryan, J. P. Emery, et al. P. R. Christensen, V. E. Hamilton, A. A. Simon, D. C. Reuter, M. Al Asad, R.-L. Ballouz, J. L. Bandfield, O. S. Barnouin, C. A. Bennett, M. Bernacki, K. N. Burke, S. Cambioni, B. E. Clark, M. G. Daly, M. Delbo, D. N. DellaGiustina, C. M. Elder, R. D. Hanna, C. W. Haberle, E. S. Howell, D. R. Golish, E. R. Jawin, H. H. Kaplan, L. F. Lim, J. L. Molaro, D. P. Munoz, M. C. Nolan, B. Rizk, M. A. Siegler, H. C. Susorney, K. J. Walsh, and D. S. Lauretta. 2020. "Asteroid (101955) Bennu’s weak boulders and thermally anomalous equator." Science Advances 6 (41): eabc3699 [10.1126/sciadv.abc3699]

    DellaGiustina, D. N., H. H. Kaplan, A. A. Simon, et al. W. F. Bottke, C. Avdellidou, M. Delbo, R.-L. Ballouz, D. R. Golish, K. J. Walsh, M. Popescu, H. Campins, M. A. Barucci, G. Poggiali, R. T. Daly, L. Le Corre, V. E. Hamilton, N. Porter, E. R. Jawin, T. J. McCoy, H. C. Connolly, J. L. Garcia, E. Tatsumi, J. de Leon, J. Licandro, S. Fornasier, M. G. Daly, M. M. Al Asad, L. Philpott, J. Seabrook, O. S. Barnouin, B. E. Clark, M. C. Nolan, E. S. Howell, R. P. Binzel, B. Rizk, D. C. Reuter, and D. S. Lauretta. 2020. "Exogenic basalt on asteroid (101955) Bennu." Nature Astronomy [10.1038/s41550-020-1195-z]

    Jawin, E. R., K. J. Walsh, O. S. Barnouin, et al. T. J. McCoy, R. Ballouz, D. N. DellaGiustina, H. C. Connolly, J. Marshall, C. Beddingfield, M. C. Nolan, J. L. Molaro, C. A. Bennett, D. J. Scheeres, M. G. Daly, M. Al Asad, R. T. Daly, E. B. Bierhaus, H. C. Susorney, H. H. Kaplan, H. L. Enos, and D. S. Lauretta. 2020. "Global Patterns of Recent Mass Movement on Asteroid (101955) Bennu." Journal of Geophysical Research: Planets 125 (9): [10.1029/2020je006475]

    Kaplan, H. H., V. E. Hamilton, E. S. Howell, et al. S. F. Anderson, M. A. Barrucci, J. Brucato, T. H. Burbine, B. E. Clark, E. A. Cloutis, H. C. Connolly, E. Dotto, J. P. Emery, S. Fornasier, C. Lantz, L. F. Lim, F. Merlin, A. Praet, D. C. Reuter, S. A. Sandford, A. A. Simon, D. Takir, and D. S. Lauretta. 2020. "Visible–near infrared spectral indices for mapping mineralogy and chemistry with OSIRIS ‐ RE x." Meteoritics & Planetary Science maps.13461 [10.1111/maps.13461]

    Hamilton, V. E., the OSIRIS-REx Team, A. A. Simon, et al. P. R. Christensen, D. C. Reuter, B. E. Clark, M. A. Barucci, N. E. Bowles, W. V. Boynton, J. R. Brucato, E. A. Cloutis, H. C. Connolly, K. L. Donaldson Hanna, J. P. Emery, H. L. Enos, S. Fornasier, C. W. Haberle, R. D. Hanna, E. S. Howell, H. H. Kaplan, L. P. Keller, C. Lantz, J.-Y. Li, L. F. Lim, T. J. McCoy, F. Merlin, M. C. Nolan, A. Praet, B. Rozitis, S. A. Sandford, D. L. Schrader, C. A. Thomas, X.-D. Zou, and D. S. Lauretta. 2019. "Evidence for widespread hydrated minerals on asteroid (101955) Bennu." Nature Astronomy 3 (4): 332-340 [10.1038/s41550-019-0722-2]

    DellaGiustina, D. N., The OSIRIS-REx Team, J. P. Emery, et al. D. R. Golish, B. Rozitis, C. A. Bennett, K. N. Burke, R.-L. Ballouz, K. J. Becker, P. R. Christensen, C. Y. Drouet d’Aubigny, V. E. Hamilton, D. C. Reuter, B. Rizk, A. A. Simon, E. Asphaug, J. L. Bandfield, O. S. Barnouin, M. A. Barucci, E. B. Bierhaus, R. P. Binzel, W. F. Bottke, N. E. Bowles, H. Campins, B. C. Clark, B. E. Clark, H. C. Connolly, M. G. Daly, J. D. Leon, M. Delbo’, J. D. Deshapriya, C. M. Elder, S. Fornasier, C. W. Hergenrother, E. S. Howell, E. R. Jawin, H. H. Kaplan, T. R. Kareta, L. Le Corre, J.-Y. Li, J. Licandro, L. F. Lim, P. Michel, J. Molaro, M. C. Nolan, M. Pajola, M. Popescu, J. L. Garcia, A. Ryan, S. R. Schwartz, N. Shultz, M. A. Siegler, P. H. Smith, E. Tatsumi, C. A. Thomas, K. J. Walsh, C. W. Wolner, X.-D. Zou, and D. S. Lauretta. 2019. "Properties of rubble-pile asteroid (101955) Bennu from OSIRIS-REx imaging and thermal analysis." Nature Astronomy 3 (4): 341-351 [10.1038/s41550-019-0731-1]

    Lauretta, D. S., D. N. DellaGiustina, C. A. Bennett, et al. D. R. Golish, K. J. Becker, S. S. Balram-Knutson, O. S. Barnouin, T. L. Becker, W. F. Bottke, W. V. Boynton, H. Campins, B. E. Clark, H. C. Connolly, C. Y. Drouet d’Aubigny, J. P. Dworkin, J. P. Emery, H. L. Enos, V. E. Hamilton, C. W. Hergenrother, E. S. Howell, M. R. Izawa, H. H. Kaplan, M. C. Nolan, B. Rizk, H. L. Roper, D. J. Scheeres, P. H. Smith, K. J. Walsh, C. W. Wolner, The OSIRIS-REx Team, and L. F. Lim. 2019. "The unexpected surface of asteroid (101955) Bennu." Nature 568 (7750): 55-60 [Full Text (Link)] [10.1038/s41586-019-1033-6]

    Kaplan, H. H., R. E. Milliken, C. M. Alexander, and C. D. Herd. 2019. "Reflectance spectroscopy of insoluble organic matter (IOM) and carbonaceous meteorites." Meteoritics & Planetary Science 54 (5): 1051-1068 [10.1111/maps.13264]

    Marchi, S., A. Raponi, T. H. Prettyman, et al. M. C. De Sanctis, J. Castillo-Rogez, C. A. Raymond, E. Ammannito, T. Bowling, M. Ciarniello, H. Kaplan, E. Palomba, C. T. Russell, V. Vinogradoff, and N. Yamashita. 2018. "An aqueously altered carbon-rich Ceres." Nature Astronomy 3 (2): 140-145 [10.1038/s41550-018-0656-0]

    Deutsch, A. N., J. W. Head, K. R. Ramsley, et al. C. M. Pieters, R. W. Potter, A. M. Palumbo, M. S. Bramble, J. P. Cassanelli, E. R. Jawin, L. M. Jozwiak, H. H. Kaplan, C. F. Lynch, A. C. Pascuzzo, L. Qiao, and D. K. Weiss. 2018. "Science exploration architecture for Phobos and Deimos: The role of Phobos and Deimos in the future exploration of Mars." Advances in Space Research 62 (8): 2174-2186 [10.1016/j.asr.2017.12.017]

    Kaplan, H. H., R. E. Milliken, and C. M. Alexander. 2018. "New Constraints on the Abundance and Composition of Organic Matter on Ceres." Geophysical Research Letters 45 (11): 5274-5282 [10.1029/2018gl077913]

    Kaplan, H. H., and R. E. Milliken. 2018. "Reflectance spectroscopy of organic matter in sedimentary rocks at mid-infrared wavelengths." Clays and Clay Minerals 66 (2): 173-189 [10.1346/ccmn.2018.064092]

    Kaplan, H. H., R. E. Milliken, D. Fernández-Remolar, et al. R. Amils, K. Robertson, and A. H. Knoll. 2016. "Orbital evidence for clay and acidic sulfate assemblages on Mars based on mineralogical analogs from Rio Tinto, Spain." Icarus 275 45-64 [10.1016/j.icarus.2016.03.019]

    Kaplan, H. H., and R. E. Milliken. 2016. "Reflectance Spectroscopy for Organic Detection And Quantification in Clay-bearing Samples: Effects of Albedo, Clay Type, and Water Content." Clays and Clay Minerals 64 (2): 167-184 [10.1346/ccmn.2016.0640207]

                                                                                                                                                                                            
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