Across
- 4. point of highest ascent
- 5. relating to the moon
- 9. star-related prefix
- 10. sky glow from charged particles
- 11. streak of light from falling debris
- 13. robot exploring alien terrain
- 14. orderly whole of the universe
- 17. path a body follows around a star
Down
- 1. long constellation winding across the sky
- 2. cloud of gas lit from within
- 3. impact hollow on a moon or planet
- 6. spot directly overhead
- 7. vast and universal
- 8. immense stellar island
- 10. name tied to early moon flights
- 12. hunter’s pattern in the night
- 14. icy traveller with a glowing tail
- 15. powered by the sun
- 16. darkest part of a shadow