Across
- 2. Explosion at end of star's life
- 3. The Sun and all objects that orbit around it
- 4. Theory of how the universe began
- 6. Young star, still gathering mass
- 8. Smallest planet in our solar system
- 11. What a meteoroid becomes after hitting Earth
- 12. Large collection of dust, stars and solar systems
- 14. Star with exhausted supply of hydrogen in core
Down
- 1. When moon gets between Earth and the Sun
- 5. Eighth planet from the Sun
- 7. Also called 'Northern Lights'
- 9. Distance light travels in a year
- 10. Primarily made of ice and dust, has a long tail
- 13. Closest planet to Earth