It contains 99.9 percent of all the matter in our solar system and sheds hot plasma at nearly a million miles an hour. The temperature at its core is a staggering 27 million degrees Fahrenheit. It convulses, it blazes, it sings. You know it as the sun. Scientists know it as one of the most amazing physics laboratories in the universe.
Lance Lewman
as Narrator
Holly Gilbert
as Herself - NASA Goddard Space Flight Center
Bill Murtagh
as Himself - National Oceanic and Atmospheric Administration Space Weather Center
Jim Green
as Himself - NASA Planetary Science
Todd Hoeksema
as Himself - Stanford University
Sarah Gibson
as Herself - National Center for Atmospheric Research, High Altitude Observatory
Scott McIntosh
as Himself - National Center for Atmospheric Research, High Altitude Observatory
Karel Schrjiver
as Himself - Lockheed Martin
W. Dean Pesnell
as Himself - NASA Goddard Space Flight Center
Luc Peterson
as Himself - Princeton Plasma Physics Laboratory
Phillip Chamberlin
as Himself - NASA Goddard Space Flight Center
