Across
- 4. the circular path of a planet
- 5. farthest planet from the sun
- 6. is being explored for life
- 8. water rising and falling every 12 hours
- 10. group of stars, dust and gas
- 11. a chunk of burning rock traveling through Earth’s atmosphere
- 12. in between earth and mercury
- 14. gas giant, biggest planet
Down
- 1. known for its rings
- 2. once thought to be a planet, now dwarf planet
- 3. object in space made mostly of ice and dust
- 6. closest to the sun
- 7. big, remote ball of light in space
- 9. 1.78 billion miles from the sun
- 13. the only planet where life is