| Heavenly explosions |
| Observatory observations |
| Antarctic observatory mount |
| A standard shown on a Royal Observatory wall |
| Observatory subj. |
| Underground explosions |
| Areas with population explosions |
| Explosions |
| Observatory sighting |
| Dynamite explosions |
| Bikini explosions |
| Cause of explosions |
| Observatory sightings |
| Like some explosions |
| Output of some natural explosions |
| Big explosions |
| Explosions in the sky |
| Observatory explosions |
| Cause of some explosions |
| Secret explosions |
| Wisconsin observatory |
| Most movie explosions these days, for short |
| Home of the Keck Observatory |
| Loud explosions |
| Puerto Rico's -- Observatory |
| Stellar explosions |
| Observatory observer: Abbr. |
| Observatory feature |
| Causes of some home explosions |
| Site of Lick Observatory |