Across
- 3. 7 planets orbiting a star in the center.
- 5. A galaxy with no common shape.
- 7. All matter and energy is in this.
- 9. Collection of dust stars and solar systems.
Down
- 1. A spiral galaxy that humans live in.
- 2. A galaxy with a bright center; egg.
- 3. A galaxy with arms.
- 4. Always growing
- 6. The star in the center of the Solar System
- 8. Bright light at the center of galaxies