Planetary Scientist – Jet Propulsion Laboratory
Research Scientist – SETI Institute and NASA Ames Research Center
Research Astrophysicist – Goddard Space Flight Center
Director – Marshall Space Flight Center
Research Scientist – NASA Ames Research Center
Director, Department of Sensor Systems and Nondestructive Evaluation – Southwest Research Institute
Scientist, “The Voice of JPL” – “The Voice of JPL”
Geologist – Jet Propulsion Laboratory
Planetary Scientist
Astrophysicist – Goddard Space Flight Center
