1. Galaxies

2. Learning goals We are learning about other components of the universe.
We are learning to identify galaxies by shape.

3. Galaxies (Text Ref. Page 285-286)
recall…. galaxies are enormous collections of stars, planets, gas, and dust
come in different shapes and sizes
grouped by shape into four categories

4. 1. Elliptical Galaxies
a large group of stars that together make an elliptical or oval shape

5. 2. Spiral Galaxies
a large group of stars that together make a spiral shape
have a central bulge with spiral arms

6. 2. Spiral Galaxies subclass is barred spiral galaxies
have a central bar running down the middle
ex. The Milky Way

7. 3. Lenticular Galaxies
a large group of stars that together make a shape that has a central bulge but no spiral arms

8. 4. Irregular Galaxies
a large group of stars that together have no definite shape

9. Classifying Galaxies Activity: Classifying Galaxies page 387
Complete questions : 1, A-D

10. Galaxy Clusters
the Milky Way is part of a group of more than 35 galaxies called the Local group
Milky Way and Andromeda are on a collision course!!
Lookout!!!

11. Learning goals We are learning about other components of the universe.
We are learning to identify galaxies by shape.

12. Please complete
Text #1,3,4,7