Across
- 2. is completely silent how loud is space?
- 5. billion years old How old is space?
- 6. mixed together how are stars made?
- 7. what color is space?
- 8. What’s one mysterious thing floating around space?
Down
- 1. what is In space?
- 3. what color is space?
- 4. what planet is closest to the earth?