1. Types of Galaxies
Spiral
Elliptical
Irregular

2. Spiral Galaxies

3. Spiral Galaxies
Huge; contain stars, gas, and dust

4. Spiral Galaxies
Held together by gravity

5. Spiral Galaxies
Pinwheel shape (top view on graphic organizer)

6. Spiral Galaxies
Have a bulge and thin disk; halo is present

7. Spiral Galaxies
Rich in gas and dust

8. Spiral Galaxies
Young and old stars are present

9. Elliptical Galaxies

10. Elliptical Galaxies
Huge; contain stars, gas, and dust

11. Elliptical Galaxies
Held together by gravity

12. Elliptical Galaxies
Round to oval shape

13. Elliptical Galaxies
Have a huge bulge, but no disk; halo is present

14. Elliptical Galaxies
Little cool gas and dust

15. Elliptical Galaxies
Mainly old stars are present

16. Irregular Galaxies

17. Irregular Galaxies
Huge; contain stars, gas, and dust

18. Irregular Galaxies
Held together by gravity

19. Irregular Galaxies
No regular shape

20. Irregular Galaxies
May show signs of a disk and/or a bulge; halo is present I

21. Irregular Galaxies
Usually rich in gas and dust

22. Irregular Galaxies
Young and old stars are present