Low Energy Space Flight -- Groks Science Show 2007-08-22 - Charles Lee and Frank Ling Space travel has typically relied on conventional high energy routes, known as Hohmann Transfers, to transfer their payloads. However, low energy routes do exist, and are currently being explored. On this program, Dr. Ed Belbruno from NASA discussed low energy space flight. Keywords:science; NASA; space flight; Hohmann; low energy Downloads: 6,065 Average rating:(1 review)