Across
- 8. Galaxy with no regular shape that has vigorous star formation
- 11. Tight, spherical cluster that contains millions of stars
- 12. Group of stars that form a pattern in the sky
- 13. Location of our solar system in MWG
- 14. Scientist who classified the galaxies
- 16. Measure of light
- 17. Color associated with hottest stars
- 18. Two stars that revolve around each other
Down
- 1. Largest stars
- 2. Smallest stars
- 3. Large collection of stellar and interstellar matter
- 4. Most common element in stars
- 5. Size classification of our sun
- 6. Galaxy containing old stars with little gas and dust
- 7. Circular flattened region of spiral galaxies that has active star formation
- 9. Actual amount of light a star releases
- 10. Spherical area around spiral galaxy that contains old stars
- 12. Inner,dense area of spiral galaxy
- 14. Second most common element in stars
- 15. Loose,irregular cluster that contains younger stars