Across
- 5. millions of stars together make a ______
- 6. our sun was born about 4.6______ years ago
- 7. nebulae had its own spinning motion and_____
- 8. ________ make up the universe
Down
- 1. The galaxy to which our solar system belongs is called
- 2. the gigantic explosion of cosmic egg
- 3. traveling speed of light is known as
- 4. giant clouds of gases and dust particles called
- 9. The sun is a _______