| Answer | Crossword Clue |
|---|---|
| EARTH | "Blue marble" |
| EARTH | "The Blue Marble" subject |
| EARTH | The so-called "blue marble" |
| EARTHDAY | Its flag depicts the Blue Marble |
| RANCE | Marble with blue-and-white markings. |
| rance | a type of red marble, often with white or blue graining, that comes from Belgium |
