Across
- 2. Bright ball of fire
- 3. A huge group of stars and dust
- 5. Path around the sun
- 10. Rock that burns in the sky
- 12. Force that keeps us on the ground
- 13. Tool to see things far away
- 15. Person who travels in space
Down
- 1. A large round object around a star
- 4. Creature from another world
- 6. Vehicle used to fly into space
- 7. Ball of ice with a tail
- 8. Hole on a moon or planet
- 9. Gas needed to breathe
- 11. Planet famous for its rings
- 14. The center of our system