Related Clues:
- Official investigation
- Space explorers
- Pokes around
- Senate investigation
- Penetrating investigation
- Some space missions
- Investigations
- Explore deeply
- Voyager or Pathfinder, e.g.
- Space vehicles
- Question or examine thoroughly
- Examines as dentist does decaying tooth
- Conducts penetrating investigation
- Examines carefully as dentist does a bad tooth
- Investigates as dentist does tooth