Across
- 4. Dust or molecule cloud
- 5. The force that pulls different objects to each other.
- 8. Astronomer who discovered that the universe is always expanding.
Down
- 1. The beginning of the universe
- 2. Hottest planet in our solar system
- 3. The zone that is the correct distance from a star to allow life to exist.
- 6. The taste of the nebula that made our Sun
- 7. Largest planet in our solar system