| Answer | Crossword Clue |
|---|---|
| AEROPLANE | Traveler in the stratosphere. |
| HIGHUP | In the stratosphere |
| OUTOFSIGHT | In the stratosphere |
| ALOFT | In the stratosphere |
| HIGH | In the stratosphere. |
| THINAIR | It's in the stratosphere |
| OZONE | Layer in the stratosphere |
| OZONE | Gas in the stratosphere |
| SST | Former plane in the stratosphere |
| OZONE | Dwindling gas in the stratosphere |
