Bill Pugliano / Stringer / Getty Images
Jason Laurea/Lawrence Livermore National Laboratory
Nicolas Tucat/AFP via Getty Images
AP Photo/John Bazemore
Elle Starkman, PPPL
Princeton Plasma Physics Laboratory
Jason Laurea/Lawrence Livermore National Laboratory
Nicolas Tucat/AFP via Getty Images
AP Photo/John Bazemore
Elle Starkman, PPPL
Princeton Plasma Physics Laboratory