发行公司：
- Kinowelt Home Entertainment [德国] (2005) (Germany) (DVD)
- Triton Pictures (2005) (Germany) (DVD)
其他公司：
- Cavalier Transport construction transport
- D. H. A. Lighting back projection slides
- Hamish Bell Movie Transport prop transport
- J.G. Films Inc. [美国] negative cutting
- Looking Glass Studios [美国] music recording and mixing
- Rhythm & Hues [美国] computer animation
- Skywalker Sound [美国] sound effects recording
- Sound One Corporation [美国] re-recording facilities
- The Effects House Co. [美国] opticals
- Words Plus Inc. Livermore, California, USA Prof. Hawking's computerized communication system
