| ELMOREJAMES | "The Sky Is Crying" writer/blues legend |
| RAYLEIGH | Lord -; title of the co-discoverer of argon who married Arthur James Balfour's sister Evelyn in 1871, the same year he explained why the sky is blue (8) |
| TYNDALL | Physicist and Alpine mountaineer who in the 18605 discovered by means of a glass tube why the sky is blue in the day but red at sunset (7) |
| OWLS | If they fly in the sky, is this the police force the Yanks deploy? (4) |
| CHICKENLICKEN | In the 1849 version of an old folk tale, who wants to tell the king that the sky is falling? (7,6) |
| CHICKENLITTLE | Character linked to the phrase "the sky is falling" |
| OPTIMIST | In the musical South Pacific, "When the sky is a bright canary yellow; I forget every cloud I've eve |
| SKETCHY | The first city built in the sky is a bit short on detail (7) |
| EVENING | "When it is ____, ye say, It will be fair weather: for the sky is red" (St Matthew) |
| ALPHACENTAURI | Which star, the third brightest in the sky, is actually three stars close together? (5,8) |
| DOGS | The big man in the sky is sent up by small men |
| HEALTHEDUCATION | The second most effective way to scrub carbon from the sky is, surprisingly ... and ... (6,9) |
| ALARMIST | "The sky is falling!" crier, for one |
| HENNYPENNY | Kiddie lit character who cried, 'The sky is falling!' |
| OHNO | 'The sky is falling!' |
| LOOKOUTBELOW | The sky is falling! |
| LIMIT | What the sky is, it's said |
| BLUE | The sky is this colour, sometimes! (4) |
| GANYMEDE | Moon on which Heinlein's "Farmer in the Sky" is set |
| LOOKINGUP | Seeing the sky is getting better? (7,2) |
