Study Team Member, "Space Science Opportunities Augmented by Exploration Telepresence", Keck Institute for Space Studies, 2016-2017
Member, NASA Mars International Collaboration Science Analysis Group, 2016
Member, NASA Chief Scientist's Office Citizen Science Advisory Forum, 2016
Member, NASA Human Exploration Mission Directorate (HEOMD) Asteroid Redirect Mission (ARM) Formulation Assessment and Support Team (FAST), 2015
Member, Science Definition Team for the NASA Mars-2020 Rover mission, 2013
Study Team Member, In Situ Instrumentation for Primitive Bodies, Keck Institute for Space Studies, 2012
Organizing Committee, International Space Science Institute, Quantifying the Martian Geochemical Reservoirs; Workshop and Book, 2011-2012
Member, Mars Science Laboratory Participating Scientist Review Panel, 2011
Member, NASA ROSES Education and Outreach Review Panel, 2010-2011
Contributing Editor, Sky & Telescope magazine, 2011-
Consulting Editor, Icarus, 2011-
Member, NASA/JPL Mars Critical Data Products Program Review Panel, 2011
Chair, NASA Lunar Science Institute Review Panel, 2008
Member, Committee on the Review of Planetary Protection Requirements for Mars Sample Return Missions; National Research Council, National Academy of Sciences, 2008
Member then Chair, AAS/DPS Federal Relations Subcommittee, 2006-2008; 2008-2010
Member, NASA Planetary Data System Geosciences Node Advisory Group, 2008-
Member, National Academy of Sciences Committee on the Review of Planetary Protection Requirements for Mars Sample Return Missions, 2008
Local Organizing Committee Co-Chair, 2008 AAS/DPS Conference, Ithaca
Member, NASA Mars Instrument Development Program Review Panel, 2007
Elected to AAS/DPS Committee, 2004-2006
Chair, NASA Mars Fundamental Research Program Review Panel, 2005
Editor, Icarus (International Journal of Solar System Studies), 1998-2010
Consulting Editor, Cambridge University Press Planetary Science book series, 2002-
NSF Planetary Astronomy Review panel, 2003
Group Chief, NASA Mars Scout '07 mission Review Panel, 2002
Group Chief, NASA Planetary Geology & Geophysics Review Panel, 2001-2002
Hubble Space Telescope Cycle 10 Review Panel (Solar System Committee), 2000
Group Chief, NASA Mars Data Analysis Program Review Panel, 2000
Member, NASA Planetary Astronomy NEO Program Review Panel, 2000
Program Committee Member, AAS/DPS annual meeting, Pasadena CA, 2000
Member, Italian Space Agency/NASA 2003 Mars Lander Instrument Review Panel, 1999
Member, NASA Mars Exploration Program Assessment Group (MEPAG), 1999-
Chair, NASA Mars-98 Participating Scientist Program Review Panel, 1999
Member, AAS Working Group on Professional-Amateur Collaboration, 1999-
Group Chief, NASA Mars Data Analysis Program Review Panel, 1998
Member, NASA Planetary Geology & Geophysics Program Review Panel, 1998
NASA Planetary Astronomy Program Management Operations Working Group, 1996-98
Eos Planetary Sciences Editor, AGU Weekly newspaper, 1997-1999
Member, NASA Mars Science Working Group (MarsSWG), 1996-1997
Member, SIRTF Solar System Working Group, 1996-
Member, SIRTF Large Projects/Survey Working Group, 1995-96
National Research Council Panel on Reducing Space Science Mission Costs, 1996
NASA Planetary Instrument Definition and Development Program Review Panel, 1995
Hubble Space Telescope Cycle 6 Review Panel (Solar System Committee), 1995
NASA Discovery Missions and Planetary Astronomy Review Panels, 1994
Lunar and Planetary Science Conference Program Committee, 1994-1995
Member, NASA MSATT, MECA, MEVTV, and MSATT Study Groups, 1988-1993
Expertise Areas:
Planetary Geoscience
Image and Video Processing