Himself (as Dr. Dan Durda)
Self - Southwest Research Institute
Self - Planetary Scientist
Self - Planetary Scientist
Self - Planetary Scientist
Self - Planetary Scientist
Self - Planetary Scientist
Self - Astronomer: Southwest Research Institute 1 episode, 2015
Self - Planetary Scientist
Self - Planetary Scientist, Southwest Research Institute
Self - Planetary Scientist
Self - Planetary Scientist