Tags Gwynne Shotwell SpaceX Falcon 9 reusable first stage recovering second stages Falcon Heavy Raptor engine commercial payloads SpaceX satellites Mars lunar tourism F9 costs SpaceX astronauts Nuclear propulsion SpaceX coast to coast capability carbon fiber crew safety Red Dragon Mars spaceship defining a healthy space program ITAR Lars Blackmore SpaceX reusable team USAF requirements subscale Raptor vs. full scale Raptor SpaceX priorities & focus the National Space Council Guest Gwynne Shotwell Tagline SpaceX talk View the discussion thread.