Full PDF CV, updated Apr. 2024
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Brief CV

Dr. Edgard G. Rivera-Valentín

Johns Hopkins Applied Physics Laboratory

Education

2012 – Ph.D., Space and Planetary Sciences
Arkansas Center for Space and Planetary Sciences, University of Arkansas
2008 – B.A., Physics, Mathematics, Minor in Planetary Science
Department of Physics, Department of Mathematics, Alfred University

Appointments

Sep 2022 – present: Planetary Radar Scientist, Johns Hopkins Applied Physics Laboratory
Jan 2020 – present: Science Editor, Planetary Science Journal (PSJ), American Astronomical Society (AAS)
Nov 2017 – Aug 2022: Planetary Scientist, Lunar and Planetary Institute, Universities Space Research Association
Aug 2014 – Mar 2018: Planetary Radar Astronomer, Arecibo Observatory, Universities Space Research Association
Aug 2012 – July 2014: Postdoctoral Research Associate, Dept. of Geosciences, Brown University
May 2011 – July 2012: Web Developer, National Office for Research on Measurement and Evaluation Systems
May 2007 – Aug 2007: LPI Summer Intern, Lunar and Planetary Institute, Universities Space Research Association

Honors and Awards

2019: Granted NASA Early Career Fellow, NASA Planetary Science Division
2017: Named NASA Early Career Fellow, NASA Planetary Science Division
2008 – 2012: Doctoral Academy Fellow, University of Arkansas
2008: Alfred University Scholar, Alfred University
2008: Dean’s Award, Alfred University
2008: Diversity Leadership Award, Alfred University
2007: Metzger Award in Astronomy, Alfred University

White Papers

[10] Méndez, A., Rivera-Valentín, E. G. et al., 2020. Habitability models for planetary science. White Paper submitted to the Planetary Science and Astrobiology Decadal Survey (2023-2032).
[9] Rathbun, J., Rivera-Valentín, E. G. et al., 2020. Who is missing in Planetary Science?: Strategic recommendations to improve the diversity of the field. White Paper submitted to the Planetary Science and Astrobiology Decadal Survey (2023-2032).
[8] Rivera-Valentín, E. G. et al., 2020. The importance of ground-based radar observations for planetary exploration. White Paper submitted to the Planetary Science and Astrobiology Decadal Survey (2023-2032).
[7] Rivera-Valentín, E. G. et al., 2020. Resolving the water cycle on a salty Mars: Planetary science and astrobiology exploration strategies for the next decade. White Paper submitted to the Planetary Science and Astrobiology Decadal Survey (2023-2032).
[6] Rivera-Valentín, E. G. et al., 2020. Who is missing in Planetary Science?: A demographic study of the planetary science workforce. White Paper submitted to the Planetary Science and Astrobiology Decadal Survey (2023-2032).
[5] Strauss, B. E., et al. including Rivera-Valentín, E. G., 2020. Nonbinary systems: Looking towards the future of gender equity in planetary science. White Paper submitted to the Planetary Science and Astrobiology Decadal Survey (2023-2032).
[4] Taylor, P. A., Rivera-Valentín, E. G., Bonsall, A., 2020. Ground-based radar for planetary science and planetary defense. White Paper submitted to the Planetary Science and Astrobiology Decadal Survey (2023-2032).
[3] Vander Kaaden, K. E., et al. including Rivera-Valentín, E. G., 2020. Creating Inclusive, Supportive, and Safe Environments in Planetary Science for Members of the LGBTQ+ Community. White Paper submitted to the Planetary Science and Astrobiology Decadal Survey (2023-2032).
[2] Virkki et al. including Rivera-Valentín, E. G., 2020. Near-Earth object characterization using ground-based radar systems. White Paper submitted to the Planetary Science and Astrobiology Decadal Survey (2023-2032).
[1] Taylor, P. A., Rivera-Valentín, E. G., et al., 2019. Planetary radar astronomy with ground-based astrophysical assets. White Paper submitted to Astro2020 Decadal Survey.

Announcements & Notes

[11] Jackson, B., Diniega, S., Titus, T., Soto, A., Rivera-Valentín, E. G., 2023. The Nitty-Gritty Forces That Shape Planetary Surfaces. EOS, 104.
[10] Rivera-Valentín, E. G., 2022. The importance of IDEA in Planetary Science. Lunar and Planetary Institute Information Bulletin 169.
[9] Rivera-Valentín, E. G., 2022. Summary of the Advancing IDEA in Planetary Science Conference. Lunar and Planetary Institute Information Bulletin 169.
[8] Taylor, P. A., Rivera-Valentín, E. G., 2021. Fall of an Icon: The past, present, and future of Arecibo Observatory. Lunar and Planetary Institute Information Bulletin 165.
[7] Rivera-Valentín, E. G., 2020. Salty water everywhere, nor any drop to drink. Nature Astronomy, Behind the Paper.
[6] Rivera-Valentín, E. G., 2019. Mars: Reimagining terraforming. Nature Astronomy, doi: 10.1038/s41550-019-0908-7.
[5] Virkki, A K., Marshall, S. E., Venditti, F. C. F., Zambrano-Marin, L. F., Rivera-Valentín, E. G., Taylor, P. A., 2019. Discovery announcement of binary system near-Earth asteroid 2016 AZ8. CBET 4593.
[4] Bhiravarasu, S. S., Rivera-Valentín, E. G., Taylor, P. A., Zambrano-Marin, L. F., Aponte-Hernandez, B., Marshall, S. E., 2018. Arecibo Radar Observations of Dwarf Planet 1 Ceres During the 2018 Apparition. Research Notes of the AAS, 2, 232.
[3] Rivera-Valentín, E. G., Schmelz, J. T., 2018. Arecibo weathers the storm. Nature Astronomy, Comment, doi:10.1038/s41550-018-0394-3.
[2] Brozovic, M., Benner, L. A. M., Naida, S. P., Giorgini, J. D., Jao, J. S., Lee, C. G., Snedeker, L. G., Slade, M. A., Lawrence, K. J.,  Rivera-Valentín, E. G., Taylor, P. A., 2017. (226514) 2003 UX34 binary asteroid. CBET 4353.
[1] Rivera-Valentín, E. G., Taylor, P. A., Virkki, A., and Aponte Hernandez, B., 2017. (163693) Atira Binary Asteroid System. CBET 4347.

Refereed Publications

Students, Postdocs, RAs advised indicated by *

2024

[53] Radar and Optical Observations and Physical Modeling of Binary Near-Earth Asteroid 2018 EB.
Brozović, M., et al. including Rivera-Valentín, E. G.
Planetary Science Journal, doi:10.3847/PSJ/ad4342.
[52] Physical and Mutual Orbit Characteristics of Near-Earth Binary Asteroid (163693) Atira
Deleon, A. P., et al. including Rivera-Valentín, E. G.
Planetary Science Journal, doi:10.3847/PSJ/ad7814
[51] An Improved Orthorectification and Empirical Reduction of Topographic Effects in Monostatic Mini-RF S-band Observations of the Moon.
Fassett, C. I., et al. including Rivera-Valentín, E. G.
Planetary Science Journal, doi:10.3847/PSJ/ad0a61. Open Data
[50] Chapter 8: The cratering record of Ganymede
Kirchoff, M. R., Barr, A., Bland, M., Bray, V., Rivera-Valentín, E. G., Schenk, P.
in Book: Ganymede, ISBN:9781108832953.
[49] Mini-RF S-band Radar Characterization of a Lunar South Pole–crossing Tycho Ray: Implications for Sampling Strategies.
Rivera-Valentín, E. G., Fassett, C. I., Denevi, B. W., Meyer, H. M., Neish, C. D., Morgan, G. A., Cahill, J. T. S., Stickle, A. M., Patterson, G. W.
Planetary Science Journal, doi:10.3847/PSJ/ad320d. Open Data
[48] Radar circular polarization ratio of near-Earth asteroids: Links to spectral taxonomy and surface processes
Rivera-Valentín, E. G., Aponte-Hernández, B., Taylor, P. A., Nolan, M. C., Howell, E. S., Waller, D., Zambrano-Marin, L. F., Virkki, A. K., Ballouz, R.-L., Stickle, A. M.
Planetary Science Journal, doi:10.3847/PSJ/ad7df1. Open Data

2023

[47] OSIRIS-APEX: An OSIRIS-REx Extended Mission to Asteroid Apophis
DellaGiustina, D. N., et al. including Rivera-Valentín, E. G.
Planetary Science Journal, doi:10.3847/PSJ/acf75e.
[46] Investigating the stability and distribution of surface ice in Mercury’s northernmost craters
Glantzberg, A. K., Chabot, N. L., Barker, M. K., Mazarico, E., Siegler, M. A., Martinez Camacho, J. M., Hamil, C. D., Rivera-Valentín, E. G., Meyer, H., Bertone, S.
Planetary Science Journal, doi:10.3847/PSJ/acd68d.
[45] Laboratory studies of brine growth kinetics relevant to deliquescence on Mars
Gough, R. V., Nuding, D. L., Martinez, G. M., Rivera-Valentín, E. G., Primm, K. M., Tolbrt, M. A.
Planetary Science Journal, doi:10.3847/PSJ/acbd98.
[44] Salt constructs in paleo-lake basins as high-priority astrobiology targets
Phillips, M. S., McInenly, M., Hofmann, M. H., Hinman, N. W., Warren-Rhodes, K., Rivera-Valentín, E. G., Cabrol, N. A.
Remote Sensing, doi: 10.3390/rs15020314.
[43] Dark comets? Unexpectedly large nongravitational accelrations on a sample of small asteroids
Seligman, D. Z., Farnocchia, D., Micheli, M., Vokrouhlicky, D., Taylor, A. G., Chesley, S. R., Bergner, J. B., Veres, P., Hainaut, O. R., Meech, K. J., Devogele, M., Pravec, Petr, Matson, R., Deen, S., Tholen, D. J., Veryk, R., Rivera-Valentín, E. G., Sharkey, B. N. L.
Planetary Science Journal, doi: 10.3847/PSJ/acb697.
[42] Planetary Radar – State-of-the-Art Review
Virkki, A. K., Neish, C. D., Rivera-Valentín, E. G., Bhiravarasu, S. S., Hickson, D. C., Nolan, M. C., Orosei, R.
Remote Sensing, doi:10.3390/rs15235605.

2022

[41] Limited stability of multi-component brines on the surface of Mars
Chevrier, V. F., Fitting, A. B., Rivera-Valentín, E. G.
Planetary Science Journal, doi:10.3847/PSJ/ac6603. Open Data
[40] Thermodynamic modeling of perchlorate/chloride and perchlorate/chlorate deliquescence at Mars-relevant temperatures
Chevrier, V. F., Fitting, A., El Senousy, A., Rivera-Valentín, E. G.
Geochmica et Cosmochimica Acta, doi:10.1016/j.gca.2022.06.011.
[39] Radar and optical characterization of near-Earth asteroid 2019 OK
Fernanda Zambrano-Marin, L., Howell, E. S., Taylor, P. A., Marshall, S. E., Devogèle, M., Virkki, A. K., Hickson, D. C., Rivera-Valentín, E. G., Venditti, F. C. F., Giorgini, J. D.
Planetary Science Journal, doi:10.3847/PSJ/ac63cd.
[38] Physical Characterization of 2015 JD1: A Possibly Inhomogeneous Near-Earth Asteroid
Lopez Oquendo, A. J., Trilling, D. E., Gustafsson, A., Virkki, A. K., Rivera-Valentín, E. G., Granvik, M., Chandler, C. O., Chatelain, J. P., Taylor, P. A., Zambrano Marin, L. F.
Planetary Science Journal, doi:10.3847/PSJ/ac7e4f.
[37] Biophysical manipulation of the extracellular environment by Eurotium halophilicum
Micheluz, A., Pinzari, F., Rivera-Valentín, E. G., Manente, S., Hallsworth, J. E.
Pathogens, doi:10.3390/pathogens11121462.
[36] Arecibo S-band radar characterization of local-scale heterogeneities within Mercury’s North Polar deposits.
Rivera-Valentín, E. G., Meyer, H. M, Taylor, P. A., Mazarico, E., Bhiravarasu, S. S.*, Virkki, A. K., Nolan, M. C., Chabot, N. L., Giorgini, J. D.
Planetary Science Journal, doi:10.3847/PSJ/ac54a0. Open Data
[35] Experimental constraints on deliquescence of calcium perchlorate mixed with a Mars regolith analog.
Slank, R.*, Rivera-Valentín, E. G., Chevrier, V. F.
Planetary Science Journal, doi:10.3847/PSJ/ac75c4. Open Data
[34] Arecibo planetary radar observations of near-Earth asteroids: 2017 December – 2019 December
Virkki, A. K. et al. including Rivera-Valentín, E. G.
Planetary Science Journal, doi:10.3847/PSJ/ac8b72.

2021

[33] Morphometric study of craters on Saturn’s moon Rhea.
Aponte Hernández, B.* , Rivera-Valentín, E. G., Kirchoff, M. R., Schenk, P. M.
Planetary Science Journal, doi:10.3847/PSJ/ac32d4. NASA PubSpace Open Data
[32] Dione’s wispy terrain: A cryovolcanic story?
Dalle Ore, D. M., Long, C. J., Nichols-Fleming, F., Scipioni, F., Rivera-Valentín, E. G., Lopez Oquendo, A. J.* , Cruikshank, D. P.
Planetary Science Journal, doi:10.3847/PSJ/abe7ec. NASA PubSpace
[31] Water uptake by chlorate salts under Mars-relevant conditions.
Fernanders, M. S., et al. including Rivera-Valentín, E. G.
Icarus, doi:10.1016/j.icarus.2021.114715.
[30] Habitability models for Astrobiology.
Méndez, A., Rivera-Valentín, E. G., et al.
Astrobiology, doi:10.1089/ast.2020.2342. arXiv
[29] Prolonged rock exhumation at the rims of kilometer-scale lunar craters.
Nypaver, C. A.* , Thomson, B. J., Fassett, C. I., Rivera-Valentín, E. G., Patterson, G. W.
JGR Planets, doi:10.1029/2021JE006897.
[28] Introduction – First Billion Years: Habitability.
Rivera-Valentín, E. G., Filiberto, J., Lynch, K. L., Mamajanov, I., Lyons, T. W., Schulte, M., Méndez, A.
Astrobiology, doi:10.1089/ast.2020.2314. NASA PubSpace
[27] Asteroid 16 Psyche: Shape, features, and global map.
Shepard, M. K., de Kleer, K., Cambioni, S., Taylor, P. A., Rivera-Valentín, E. G., et al.
Planetary Science Journal, doi:10.3847/PSJ/abfdba.

2020

[26] Global temporal and geographic stability of brines on present-day Mars.
Chevrier, V. F., Rivera-Valentín, E. G., Soto, A., Altheide, T. S.
Planetary Science Journal, doi:10.3847/PSJ/abbc14. NASA PubSpace
[25] Distribution and habitability of (meta)stable brines on present-day Mars.
Rivera-Valentín, E. G., Chevrier, V. F., Soto, A., Martínez, G.
Nature Astronomy, doi:10.1038/s41550- 020-1080-9. arXiv NASA PubSpace Open Data
[24] The anatomy of fresh complex craters on the mid-sized moons of Saturn and self-secondary cratering at the rayed crater Inktomi (Rhea).
Schenk, P., Kirchoff, M., Hoogenboom, T., Rivera-Valentín, E. G.
Meteoritics and Planetary Science, doi: 10.1111/maps.13592.
[23] How good is “good enough”?: Major element chemical analysis of planetary basalts by spacecraft instruments.
Treiman, A. H., Filiberto, J., Rivera-Valentín, E. G.
Planetary Science Journal, doi:10.3847/PSJ/abbc05.

2019

[22] Shape model and spin-state analysis of PHA contact binary (85990) 1999 JV6 from combined radar and optical observations.
Rożek, A., et al., including Rivera-Valentín, E. G.
Astronomy and Astrophysics, doi: 10.1051/0004-6361/201936302.
[21] Arecibo radar observations of near-Earth asteroid (3200) Phaethon during the 2017 apparition.
Taylor, P. A., Rivera-Valentín, E. G., Benner, L. A. M., Marshall, S. E., Virkki, A. K., Venditti, F. C. F., et al.
Planetary and Space Sciences, doi:10.1016/j.pss.2019.01.009. arXiv

2018

[20] Solid-solid hydration and dehydration of Mars-relevant chlorine salts: Implications for Gale Crater and RSL locations.
Gough, R. V., Primm, K. M., Rivera-Valentín, E. G., Martinez, G. M., Tolbert, M. A.
Icarus, doi:10.1016/j.icarus.2018.10.034.
[19] The Effect of Mars-relevant soil analogs on the Water Uptake of Magnesium Perchlorate and Implications for the Near-Surface of Mars.
Primm, K. M., Gough, R. V., Wong, J., Rivera-Valentín, E. G., Martinez, G. M., Hogancamp, J., Archer, P., Ming, D., Tolbert, M.
Journal of Geophysical Research: Planets, doi:10.1029/2018JE005540.
[18] Constraining the potential liquid water environment at Gale crater, Mars.
Rivera-Valentín, E. G., Gough, R. V., Chevrier, V. F., Primm, K. M., Martínez, G. M., Tolbert, M.
Journal of Geophysical Research: Planets, doi:10.1002/2018JE005558. arXiv NASA PubSpace

2017

[17] Adsorption driven regolith-atmospheric water vapor transfer on Mars: An analysis of Phoenix TECP data.
Farris, H. N.* , Conner, M. B., Chevrier, V. F., Rivera-Valentín, E. G.
Icarus, doi:10.1016/j.icarus.2017.08.002.
[16] The equilibrium temperature of planets in elliptical orbits.
Méndez, A., Rivera-Valentín, E. G.
Astrophysical Journal Letters, doi:10.3847/2041-8213/aa5f13. arXiv

2016

[15] Possible water lubricated grain movement in the circumpolar region of Mars.
Kereszturi, A., Rivera-Valentín, E. G.
Planetary and Space Science, doi:10.1016/j.pss.2016.03.015.
[14] Physical Characterization Of  2  m Diameter Near-Earth Asteroid 2015 TC25: A Possible Boulder From E-Type Asteroid (44) Nysa.
Reddy, V., Sanchez, J. A., Bottke, W. B., Thirouin, A., Rivera-Valentín, E. G., et al.
Astronomical Journal, doi:10.3847/0004-6256/152/6/162. arXiv

2015

[13] Transient liquid water and water activity at Gale Crater, Mars.
Martín-Torres, F. J., Zorzano, M.-P., Valentin-Serrano, P., Harri, A.-M., Genzer, M., Kemppinen, O., Rivera-Valentín, E. G., et al.
Nature Geoscience, doi:10.1038/ngeo2412.
[12] Revisiting the Phoenix TECP data: Implications for regolith control of near-surface humidity on Mars.
Rivera-Valentín, E. G., Chevrier, V. F.
Icarus, doi:10.1016/j.icarus.2015.03.003.

2014

[11] Topographic constraints on the origin of the equatorial ridge on Iapetus.
Lopez Garcia, E. J.*, Rivera-Valentín, E. G., Schenk, P. M., Hammond, N. P., Barr, A. C.
Icarus, doi:10.1016/j.icarus.2014.04.025. arXiv
[10] Experimental constraints on the composition and dynamics of Titan’s polar lakes.
Luspay-Kuti, A.*, Chevrier, V. F., Cordier, D., Rivera-Valentín, E. G., Singh, S.,Wagner, A., Wasiak, F. C.
Earth & Planetary Science Letters, doi:10.1016/j.epsl.2014.11.023.
[9] Deliquescence and efflorescence of Calcium Perchlorate: An investigation of stable aqueous solutions relevant to Mars.
Nuding, D. L., Rivera-Valentín, E. G., Davis, R. D., Gough, R. V., Chevrier, V. F., Tolbert, M. A.
Icarus, doi:10.1016/j.icarus.2014.08.036.
[8] Constraints on planetesimal disk mass from the cratering and equatorial ridge on Iapetus.
Rivera-Valentín, E. G., Barr, A. C., Lopez Garcia, E. J.* , Kirchoff, M. R., Schenk, P. M.
Astrophysical Journal, doi:10.1088/0004-637X/792/2/127. arXiv
[7] Estimating the size of late veneer impactors from impact-induced mixing on Mercury.
Rivera-Valentín, E. G., Barr, A. C.
Astrophysical Journal Letters, doi:10.1088/2041-8205/782/1/L8.
[6] Impact-induced compositional variations on Mercury.
Rivera-Valentín, E. G., Barr, A. C.
Earth & Planetary Science Letters, doi:10.1016/j.epsl.2014.02.003.

2012

[5] Formation of recurring slope lineae by liquid brines on present-day Mars.
Chevrier, V. F., Rivera-Valentín, E. G.
Geophysical Research Letters, doi:10.1029/2012GL054119.
[4] Locations of thin liquid water layers on present-day Mars.
Keresturi, A., Rivera-Valentín, E. G.
Icarus, doi:10.1016/j.icarus.2012.08.004.
[3] Experimental simulations of methane evaporation on Titan.
Luspay-Kuti, A.*, Chevrier, V. F., Wasiak, F. C., Roe, L. A., Welivitiya, W. D. D. P., Cornet, T., Singh, S., Rivera-Valentín, E. G.
Geophysical Research Letters, doi:10.1029/2012GL054003.
[2] Exploring the effects of overburden on the sublimation and transport of H2O on Iapetus.
Rivera-Valentín, E. G., Blackburn, D. G., Ulrich, R. K.
Icarus, doi:10.1016/j.icarus.2012.06.024.

2011

[1] Revisiting the thermal inertia of Iapetus: Clues to the thickness of the dark material.
Rivera-Valentín, E. G., Blackburn, D. G., Ulrich, R. K.
Icarus, doi:10.1016/j.icarus.2011.09.006.