| Answer | Crossword Clue |
|---|---|
| ANTIGRAVITY | Ideal spacecraft-propulsion method |
| SOLARSAIL | Spacecraft propulsion device utilizing radiation pressure |
| Answer | Crossword Clue |
|---|---|
| ANTIGRAVITY | Ideal spacecraft-propulsion method |
| SOLARSAIL | Spacecraft propulsion device utilizing radiation pressure |
Crossword
a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.