Across
- 1. Thing in the middle of our solar system
- 4. Planets that are not in our solar system
- 6. When a star explodes in it's life
- 8. the galaxy we live in
- 9. Where "Martians" are thought live
Down
- 2. Cosmic clouds of dust and gas
- 3. one of brightest stars in sky
- 5. Biggest planet in our solar system
- 7. name of the cloud in our solar system