Across
- 2. Gases and dust that start a stars "birth"
- 3. Depicts the classification of stars in the universe
- 5. The most common type of galaxy
- 13. The actual amount of light emitted from a star
- 14. The galaxy in which we live
- 16. A neutron star than spins and emits radio waves
- 18. How nearby stars distance from earth is determined
- 20. A stars brightness
- 21. Astronomical measuring unit used by cosmologists
Down
- 1. The entire celestial cosmos, an orderly and harmonious system
- 4. The most common type of star
- 6. Cluster of stars and satellites without a distinguished shape
- 7. The amount of light actually being seen on earth
- 8. Groups of stars that appear to form pictures
- 9. A theory of the end of the universe that has it collapsing upon itself
- 10. A galaxy with arms extending from it
- 11. A region so dense that even light cannot escape it
- 12. A star that is highly radioactive and magnetic but very small
- 15. Companion stars that appear as one to us on earth
- 17. My teacher calls himself
- 19. Indicates that the galaxies are moving away from each other