Across
- 4. - A massive stellar explosion.
- 7. - Relating to the moon.
- 9. - Relating to the sun.
- 13. - A region of space with extreme gravitational pull.
- 16. - A group of stars forming a pattern.
- 18. - Occurring between stars.
- 21. - A cloud of gas and dust in space.
- 22. - A luminous object in the night sky.
- 23. - An unknown, invisible substance in space.
- 24. - A planet outside our solar system.
- 26. - The farthest point in an object's orbit.
- 27. - A celestial object with a tail.
- 28. - Occurs when one celestial body passes in front of another.
- 29. - Vehicles designed for travel in space.
Down
- 1. - The path an object follows around a celestial body.
- 2. - The longest and shortest days of the year.
- 3. - A distant, high-energy celestial object.
- 5. - A person who travels in space.
- 6. - A celestial body that orbits the sun.
- 8. - The famous space telescope.
- 10. - A hypothetical region of comets.
- 11. - Earth's natural satellite.
- 12. - A fragment of a meteoroid that reaches Earth.
- 13. - The event marking the beginning of the universe.
- 14. - Pertaining to the universe.
- 15. - A vast system of stars, gas, and dust.
- 17. - A rocky object orbiting the sun.
- 19. - The point in the sky directly above an observer.
- 20. - An instrument for observing distant objects.
- 25. - The closest point in an object's orbit.