1Chapter 5. Up the Rope of Space
10Chapter 14. Rockets Away!
2Chapter 6. Sunward Ho!
11Chapter 15. Ice Cold on Oberon
3Chapter 7. Hot Spot on Mercury
12Chapter 16. In Orbit Around Pluto
4Chapter 8. The Veil of Venus
13Chapter 17. Stronghold of the Lost Planet
5Chapter 9. The Ocean Primeval
14Chapter 18. Sacrifice on the Sacred Moon