Tags Open Lines cake planets space radiation Lucas Museum of Narrative Arts ULA Vulcan rocket SpaceX Falcon Heavy BFR heavy lift competition Lunar Orbital Platform-Gateway (Deep Space Gateway) Skylab ii NASA Administrator artificial gravity Dr. Zubrin's recent Space Show program SLS BFS flight test hops lunar surface lunar lander public private lunar partnerships U.S. Congress international lunar development partnerships radiation risks Tesla roadster FH payload China space program for the Moon Constellation Ares V ATK solid rocket boosters SpaceX overextension? heavy lift launcher risk sharing national interest national security growing food in space Guest Dr. David Livingston Tagline Open Lines Discussion - All space topics welcome, talk about what you want to discuss View the discussion thread.