CHALLENGE OF UNANSWERED QUESTIONS, THE

Duration: 16 min

Year Published: 1968

Creator: National Aeronautics and Space Administration

Color: Color

Sound: Optical sound

Description: Presents the practical features of the aurora--one of the most mysterious and fascinating of natural phenomena. Shows the theories of its cause and the instruments and techniques used in studying it. Shows the life and experiences of a graduate student working under DR. Sydney Chapman at the Geophysical Institute, University of Alaska.