| Answer | Crossword Clue |
|---|---|
| SEASERPENT | Hydra, astronomically |
| CANIS | Dog, astronomically |
| OCCULTS | Hides, astronomically |
| ROTATION | One day, astronomically |
| EON | Astronomically long time |
| URSA | Either Bear, astronomically. |
| EON | 365 billion days, astronomically |
| ASTAR | Altair or Sirius, astronomically speaking |
| URANIAN | Like Titania and Oberon, astronomically |
