To Mars by A-Bomb: The Secret History of Project Orion
- Blwyddyn: 2003
- Gwlad: United Kingdom
- Genre: Documentary
- Stiwdio: BBC
- Allweddair: atomic bomb, space, orion
- Cyfarwyddwr: Christopher Sykes
- Cast: Jaromir Astl, Jeremy Bernstein, Arthur C. Clarke, Ed Creutz, Freeman Dyson, George Dyson