| Clue | Source | Date |
|---|---|---|
| Brake of a kind | ||
| Lunar landing aid | Thomas Joseph | 25 Sep 2018 |
| What slows advance in space career after a fashion | The Times Cryptic | 06 Mar 2017 |
| Auxiliary engine in space | ||
| Thrust producer | ||
| NASA decelerator | ||
| It's used in a lunar landing | ||
| Auxiliary engine in space | ||
| Deceleration engine |