| Clue | Source | Date |
|---|---|---|
| One of NASA's Great Observatories | USA Today | 01 Aug 2025 |
| Work close up with the Beeb to install lake observatory (6,9) | The Guardian Cryptic | 30 Oct 2024 |
| See Phoebe, Bull and edges of 7 flying in astronomical equipment (6,9) | The Guardian Cryptic | 25 Sep 2024 |
| Optical instrument launched into orbit round earth in 1990 | The Telegraph General Knowledge | 10 Apr 2016 |
| NASA launch of 1990 | ||
| It was launched by "Discovery" | ||
| Eye in space | ||
| Star watcher |