Across
- 5. Another name for these is shooting stars
- 6. This is the belief that the sun is in the middle of the Solar System
- 8. These are believed to be pieces leftover from the creation of the Solar System
- 9. This is the biggest planet
Down
- 1. These are groups of stars put together to make a pattern
- 2. This is what keeps planets in orbit
- 3. Planets Pluto is the most famous one of these
- 4. There are more than 165 of these in the Solar System
- 5. This planet is the closest to the sun
- 7. These are composed of ice rock and gas