Lance LewmanNarratorHolly GilbertHerself - NASA Goddard Space Flight CenterBill MurtaghHimself - National Oceanic and Atmospheric Administration Space Weather CenterJim GreenHimself - NASA Planetary ScienceTodd HoeksemaHimself - Stanford UniversitySarah GibsonHerself - National Center for Atmospheric Research, High Altitude ObservatoryScott McIntoshHimself - National Center for Atmospheric Research, High Altitude ObservatoryKarel SchrjiverHimself - Lockheed MartinW. Dean PesnellHimself - NASA Goddard Space Flight CenterLuc PetersonHimself - Princeton Plasma Physics LaboratoryPhillip ChamberlinHimself - NASA Goddard Space Flight Center