| Answer | Crossword Clue |
|---|---|
| ALAN | Comet co-discoverer Hale |
| ALANHALE | Comet co-discoverer who shares his name with a father-and-son acting pair |
| BOPP | Hale-... comet |
| BOPP | Comet Hale- -- |
| BOPP | Comet Hale-.. |
| BOPP | Hale-.. comet |
| BOPP | Hale- ... comet |
| BOPP | Comet Hale-... |
| BOPP | Hale-... (comet seen in 1997) |
