Details
After detecting a series of massive explosions in space, Steve and the crew of XL5 find a planet three times bigger than Earth, but they soon crash land...
- Genres: Action & Adventure, Animation, Sci-Fi & Fantasy
- Language:  English
Cast & Crew
- Cast:Gerry Anderson , David Graham , Sylvia Anderson
- Creator: Sylvia Anderson, Gerry Anderson
- Producer: Arthur Provis, Gerry Anderson