Across
- 5. It is called this when a small star blows off its outer layers.
- 6. Distance travelled by light in one year.
- 8. A theory that explains the beginning of the universe.
- 11. Consists of ice and dust and originates from the Kuiper Belt and Oort Cloud.
- 13. Another name for the northern lights.
- 14. A planet in dark blue and has an ice particle ring.
Down
- 1. A cluster of planets that orbit one or numerous stars.
- 2. An event that occurs 2-5 times a year.
- 3. A huge cluster of dust and gas holding billions of stars.
- 4. It is called this when a white-dwarf no longer shines light.
- 7. The largest planet in our solar system.
- 9. The final stage of a large stars life.
- 10. It is the second closest planet to the sun.
- 12. A rock that completely burns up when hitting Earth's atmosphere.