Related Clues:
- Historic NASA missions
- Some Roman sculptures
- Title of the puzzle
- Early NASA missions
- Moon missions
- '60s-'70s space missions
- Some NASA missions
- Some handsome Roman sculptures
- Butterflies named for a Greek god
- A survey taken on very large butterflies
- Butterflies with a head well above average size
- They're adorable
- Babies (aww ...) ... or an aural hint to 18-, 32-, 39- and 57-Across
- Many moon missions
- Beautiful young fellows