PTYS/LPL Faculty

Richard Greenberg


  • Melissa Dykhuis (PTYS)


  • William Bottke, 1995 (PTYS)
  • Sarah E. Frey, 2005 (Applied Math)
  • Greg Hoppa, 1998 (PTYS)
  • Terry Hurford, 2005 (PTYS)
  • Brian Jackson, 2009 (PTYS)
  • Michael Nolan, 1994 (PTYS)
  • David O'Brien, 2004 (PTYS)
  • James Richardson, 2005 (PTYS)
  • Chris Schaller, 1998 (PTYS)
  • Joseph Spitale, 2001 (PTYS)
  • Randy Tufts, 1998 (Geosciences)
  • Christa L. Van Laerhoven, 2014 (PTYS)


  • Rory Barnes
  • Dan Durda
  • Paul Geissler
  • Greg Ojakangas
Richard Greenberg
Planetary sciences, Theoretical astrophysics
Ph.D., 1972, Massachusetts Institute of Technology

Kuiper   #436

Years with LPL:  1972 to present


Richard Greenberg is Professor of Planetary Sciences at the University of Arizona. He leads an active research program in planetary science at the University of Arizona, where he and his research team carry out investigations of the dynamical evolution of the solar system, including studies of asteroids, meteorites, planetary rings, planetary formation, and extra-solar planets. He has had a long-term research program, dating back to his doctoral dissertation, in tidal processes and orbital resonances among natural satellites, and their implications for the history and physical character of the satellites. Greenberg served as a member of the Imaging Team for NASA's Galileo spacecraft, where his research began to focus on characterizing and interpreting Jupiter's satellite Europa, which formed the basis for his two books on Europa.

From 1989 to 2001 Greenberg led the University of Arizona's campus-wide initiative in support of pre-college science, mathematics, and technology education as founder and director of the Science and Mathematics Education Center. Accomplishments include reform of the teacher-preparation program, unique new procedures for appropriate evaluation and reward for faculty efforts in education, cultivation and coordination of sponsored projects across the campus, and integration of the K-12 science and mathematics teaching communities into the education activities of the University. Greenberg founded and directed the Image Processing for Teaching (IPT) project, which gave students in classrooms across the nation the power to engage in substantive scientific exploration and discovery using state-of-the-art digital image processing.
More about Dr. Greenberg
CV for Dr. Greenberg


Member of the Imaging Team for NASA's Galileo spacecraft mission


NASA ADS Author search: Richard Greenberg


Published Books
Unmasking Europa: the Search for Life on Jupiter's Ocean Moon, R. Greenberg, Copernicus/Springer/Praxis Books, New York, 2008.
Europa, the Ocean Moon, by R. Greenberg, Springer-Praxis, 2005.
Planetary Rings, R. Greenberg and A. Brahic, editors, Univ. of Arizona Press, 1984

(For a complete list of publications go to
Van Laerhoven, C., Barnes, R., Greenberg, R. Tides, planetary companions, and habitability: habitability in the habitable zone of low-mass stars 2014MNRAS.441.1888V

Greenberg, R., Sak, P. B. The ridges of Europa: Extensions of adjacent topography onto their flanks 2014E&PSL.389...43G

Van Laerhoven, C., Greenberg, R. Small Inner Companions of Warm Jupiters: Lifetimes and Legacies 2013ApJ...778..182V

Formation, habitability, and detections of extrasolar moons, Astrobiology in preparation, R. Heller et al. 2013.

Greenberg, R., Van Laerhoven, C., Barnes, R. Spin-driven tidal pumping: tidally driven changes in planetary spin coupled with secular interactions between planets 2013CeMDA.117..331G

Timpe, M., et al. Secular Behavior of Exoplanets: Self-consistency and Comparisons with the Planet-Planet Scattering
Hypothesis 2013AJ....146...63T

Terrestrial accretionary wedges as analogs to ridge flanks on Europa: Deformation by under-thrust terrain, by R. Greenberg & P. Sak, in review 2013.

Lenticulae, an invited article for the Encylopedia of Planetary Landforms, H. Hargitai, ed., Springer, New York, Greenberg, R., in press 2013.

Van Laerhoven, C., Greenberg, R. Characterizing multi-planet systems with classical secular theory 2012CeMDA.113..215V

Pasek, M. A., Greenberg, R. Acidification of Europa's Subsurface Ocean as a Consequence of Oxidant Delivery 2012AsBio..12..151P

Greenberg, R., van Laerhoven, C. Aligned major axes in a planetary system without tidal evolution: the 61 Virginis example 2012MNRAS.419..429G

Greenberg, R., Van Laerhoven, C. Tidal Evolution of a Secularly Interacting Planetary System 2011ApJ...733....8G

Greenberg, R. Exploration and Protection of Europa's Biosphere: Implications of Permeable Ice 2011AsBio..11..183G

Greenberg, R. Transport Rates of Radiolytic Substances into Europa's Ocean: Implications for the Potential Origin and Maintenance of Life 2010AsBio..10..275G

Tides and Exoplanets, in Formation and Evolution of Exoplanets, (ed. R. Barnes), pp. 243-266, 2010, B. Jackson et al.

Barnes, R., et al. Tidal Limits to Planetary Habitability 2009ApJ...700L..30B

Greenberg, R. Frequency Dependence of Tidal q 2009ApJ...698L..42G

Greenberg, R., Barnes, R. Tidal evolution of Dysnomia, satellite of the dwarf planet Eris 2008Icar..194..847G

Greenberg, R. Eros' Rahe Dorsum: Implications for internal structure 2008M&PS...43..435G

Riley, J., Greenberg, R., Sarid, A. Europa's South Pole Region: A sequential reconstruction of surface modification processes 2006E&PSL.248..808R

Greenberg, R., Geissler, P. Europa's dynamic icy crust 2002M&PS...37.1685G

Infecting other worlds, American Scientist 89, No.4, pp. 296-300, 2001, Greenberg and B.R. Tufts.

Standards for prevention of biological contamination of Europa, Eos, Transactions AGU, 82, 26-28, 2001, Greenberg and Tufts.

Greenberg, R., et al. Chaos on Europa 1999Icar..141..263G

Greenberg, R., et al. Tectonic Processes on Europa: Tidal Stresses, Mechanical Response, and Visible Features 1998Icar..135...64G

Greenberg, R., et al. Collisional and Dynamical History of Ida 1996Icar..120..106G

Greenberg, R., et al. Planetesimals to planets - Numerical simulation of collisional evolution 1978Icar...35....1G