| Answer | Crossword Clue |
|---|---|
| LEY | Rocketry writer Willy |
| LEY | Willy ..., pioneering writer on rocketry |
| LEY | Willy ... of rocketry |
| LEY | Willy ..., rocketry expert |
| LEY | Rocketry pioneer Willy |
| LEY | Science writer Willy |
| LEY | Science-writer Willy |
| LEY | Science writer Willy ... |
| LEY | Space writer Willy |
| LEY | Sci-fi writer Willy ... |
| LEY | "Conquest of Space" writer Willy |
| LEY | Writer Willy who popularized spaceflight |
| LEYS | Space writer Willy and others |
| LEY | "The Conquest of Space" writer Willy |
