Across
- 1. - Collection of telescopes working together
- 3. - Facility for astronomical presentations
- 6. - Display of meteors entering Earth's atmosphere
- 10. - Between planets
- 12. - Eruption on the sun's surface
- 14. - Unmanned spacecraft for exploration
- 16. - Device that converts sunlight into electricity
- 17. - Spacecraft orbiting the moon
- 18. - Takeoff of a spacecraft into space
- 19. - Study of life in the universe
- 20. - Earth-centered
Down
- 2. - Study of chemical elements and compounds in space
- 4. - Extravehicular activity by an astronaut
- 5. - Spacecraft used to land astronauts on the moon
- 7. - Cosmic material composed of microscopic particles
- 8. - Study of planetary geology
- 9. - Conditions in space affecting Earth and its inhabitants
- 11. - Cluster of interstellar clouds
- 13. - Increase in wavelength of light due to motion away from an observer
- 15. - Planet outside our solar system