| Answer | Crossword Clue |
|---|---|
| ION | ... thruster (NASA system) |
| TERRA | NASA Earth Observing System satellite |
| Answer | Crossword Clue |
|---|---|
| ION | ... thruster (NASA system) |
| TERRA | NASA Earth Observing System satellite |
Crossword
a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.