Across
- 2. - A fragment of a meteoroid that reaches Earth.
- 6. - Fourth state of matter, common in space.
- 10. - Extremely dense core of a massive star.
- 11. - Range of electromagnetic wavelengths.
- 13. - High-energy particles from space.
- 14. - Material ejected from a supernova explosion.
- 17. - Our sun and its orbiting objects.
- 21. - A large, older star in the later stages of its life.
- 23. - Space telescope for astronomical observation.
- 24. - Region with intense gravitational pull.
- 25. - Vast system of stars, gas, and dust.
- 26. - A small, dense, and dying star.
- 27. - A rotating neutron star emitting beams of radiation.
- 28. - Faint radiation from the early universe.
- 30. - Study of celestial objects and phenomena.
Down
- 1. - Study of the universe's origin and evolution.
- 3. - Originating outside Earth.
- 4. - A group of galaxies bound by gravity.
- 5. - Small rocky body in space.
- 7. - Explosion of a dying star.
- 8. - The path an object follows around a celestial body.
- 9. - Extremely bright and distant celestial object.
- 12. - Planet orbiting a star outside our solar system.
- 15. - Interstellar cloud of gas and dust.
- 16. - Formation of elements in stars.
- 18. - Theoretical beginning of the universe.
- 19. - Any natural object in space.
- 20. - High-energy electromagnetic radiation.
- 22. - A facility for celestial viewing.
- 29. - Mysterious, invisible substance in the universe.