| Answer | Crossword Clue |
|---|---|
| rocketry | the science of rocket design |
| engineering | The branch of science and technology concerned with the design, building, and use of engines, machines, and structures |
| engineerings | The branch of science and technology concerned with the design, building, and use of engines, machines, and structures |
| tribology | The study of friction, wear, lubrication, and the design of bearings; the science of interacting surfaces in relative motion |
| ISNT | "It ... rocket science!" |
| COMMONSENSE | It's not exactly rocket science |
| IDIOTPROOF | Not at all like rocket science |
