1. By: Flavio Gutierrez

2. What is a Galaxy? Massive Consists of: Stars Dust Dark matter Contains Planets Stars Moon en.wikipedia.org

3. Big Bang Theory Cosmological Model 13.8 billion years ago How the universe started en.wikipedia.org

4. Types of Galaxies Elliptical Spiral Irregular Barred Spiral Hubble Sequence en.wikipedia.org

5. Elliptical Galaxy Ellipsoidal profile Little interstellar matter Smaller globular cluster Largest Galaxy Examples: Maffei 1 Centaurus A (NGC 5128) M32 M49 M59 M60 (NGC 4649) M87 (NGC 4486) M90 M105 (NGC 3379) en.wikipedia.org

6. Spiral Galaxy Very visible stars Most beautiful Design is spiral Examples: Milky Way Andromeda Whirlpool Triangulum Sunflower Pinwheel en.wikipedia.org

7. Irregular Galaxy No shape Not in any class of Hubble sequence Examples: Magellanic Cloud galaxy en.wikipedia.org

8. Barred Spiral Galaxy Is a spiral galaxy with central bar shape Compose of stars Examples are: NGC 1300 Sculptor Galaxy M58 M91 M95 M109 NGC 1365 NGC 2217 Magellanic Clouds en.wikipedia.org

9. Lists of Galaxies There are trillions of galaxies in the world Milky Way is one the galaxies en.wikipedia.org

10. References http://en.wikipedia.org/wiki/Galaxy#mediaviewer/File:NGC_4414_(NASA-med).jpg http://en.wikipedia.org/wiki/Galaxy http://en.wikipedia.org/wiki/Galaxy#Types_and_morphology http://apod.nasa.gov/apod/image/0406/m87_cfht.jpg http://en.wikipedia.org/wiki/Spiral_galaxy#mediaviewer/File:UGC_12158.jpg http://en.wikipedia.org/wiki/Irregular_galaxy#mediaviewer/File:Irregular_galaxy_NGC_ 1427A_(captured_by_the_Hubble_Space_Telescope).jpg http://en.wikipedia.org/wiki/Barred_spiral_galaxy#mediaviewer/File:Hubble2005-01- barred-spiral-galaxy-NGC1300.jpg http://en.wikipedia.org/wiki/Big_bang_theory#mediaviewer/File:Universe_expansion2. png http://en.wikipedia.org/wiki/Big_bang_theory http://en.wikipedia.org/wiki/List_of_galaxies