| Dimitri | | After AL in HAL. |
| Dave | | H in HAL. |
| Computer | | An encampment on the moon. |
| Discovery | | After H and Before AL in HAL. |
| XRAYDELTAONE | | AL in HAL. |
| Poole | | Floyd's freind on the moon. |
| ArthurC.Clarke | | The ship going to Saturn. |
| Tools | | Crater on the moon and T in TMA-1. |
| David | | Aliens influenced man to make these. |
| Three | | Moon of Saturn with the stargate. |
| Betty | | Early man influenced by aliens. |
| Heuristically | | The Author. |
| Dr.Chandra | | An extra-dimmensional object on Saturn's moon. |
| MoonWatcher | | Man who goes to the moon to investigate the TMA-1. |
| Tycho | | Main character's first name. |
| ClaviusBase | | The computer that runs the ship Discovery. |
| Stargate | | Earth's transmission's name. |
| AE-35 | | HAL's first teacher. |
| Anomaly | | HAL kills this man. (last name) |
| ALgorithmic | | Last chapter's name. |
| ProjectBARSOOM | | Extravechicular capsule that killed Frank Poole. |
| Pod | | The unit that HAL had a malfunction over. |
| StarChild | | How many years it took to complete the TMA mission. |
| TMA-2 | | area of bad communication with Earth in space. |
| DiffractionZone | | TMA-1's 'Big Brother'. |
| Japetus | | "I'm sorry ____, I can't do that." |
| Dr.Floyd | | A in TMA-1. |
| Magnetic | | M in TMA-1. |
| HAL | | Nickname of a Extravechicular capsule. |
| Programmed | | Social experiment on the moon. |
