| Answer | Crossword Clue |
|---|---|
| IQS | High nos. for rocket scientists? |
| IQS | Nos. that are high for geniuses |
| rockoon | rocket launched from a balloon at a high altitude |
| skyrockets | A rocket designed to explode high in the air as a signal or firework |
| skyrocket | A rocket designed to explode high in the air as a signal or firework |
| contrail | streaks of condensed water vapor created in the air by an airplane or rocket at high altitudes |
