The Science Activation Program engages Subject Matter Experts (SMEs) in a variety of roles from behind the scenes guidance to public-facing interactions.  This list shows subject matter experts in NASA Science topics of planetary science, astrophysics, Earth science, and heliophysics who may be available for public-facing events. 

NASA-funded SMEs can submit an application to be shown on this list. By volunteering, you can join our efforts to engage the public directly. When you sign up, your information will be put into a database, so when someone comes to the NASA Science website looking for an expert, they can find you and decide if your expertise is what they need for their engagement activities.

Subject Matter Experts

95 result(s)

Frank Eparvier

Laboratory for Atmospheric and Space Physics (LASP)

Area of Expertise: MAVEN - Solar energetic inputs

Ari Espinoza

University of Arizona

Area of Expertise: MRO - HiRISE (geology)

Heather Elliott

SwRI -- San Antonio

Area of Expertise: New Horizons - Heliospheric Science

Christopher Edwards

Northern Arizona University

Area of Expertise: Mars Odyssey - Goal III (Geology)

Tom Duxbury

George Mason Univ.

Area of Expertise: Mars Express (MEX) - Mars Landing Site Geodesy/Cartography and (HRSC)Mars Express (MEX) - Phobos and Deimos (HRSC)

Brett Denevi

Johns Hopkins University Applied Physics Lab (JHU/APL)

Area of Expertise: Lunar Reconnaissance Orbiter (LRO) - Lunar Composition

Kevin Czajkowski

University of Toledo

Area of Expertise: Atmospheric Sciences and Remote Sensing

Joy Crisp


Area of Expertise: Curiosity - Mars geology, volcanology, igneous petrology, mineralogy, and geochemistry; MSL science; rover science operations

Joëlle Clark

Northern Arizona University

Area of Expertise: PLANETS educational outreach, MAST, MA - PI PLANETS

Russell Carpenter


Area of Expertise: MAVEN - Project engineering