1. Earth’s Galactic Address
An activity to explore your place in the universe.

2. Our Universe
Everything that exists anywhere; includes planets, stars, galaxies, and black holes
Age- between byo
the temperature is -454 degrees F

3. Galaxies
A large scale group of stars, gas, dust, and planets bound together by gravity.
contain millions to billions of stars
there are billions of galaxies in the universe, millions of light-years apart.

4. Three main types of galaxies:
Galaxies…continued
Three main types of galaxies:
Spiral galaxies (75 %)
lens-shaped with spiral arms (containing gas and dust)
Ex. Milky Way, Andromeda Galaxy
Elliptical galaxies (20%)
-nearly spherical to lens-shaped, with most of the stars close to the center.
Irregular galaxies (5%)
-smaller, fainter, and less common than the other two types.
Ex. Magellanic Clouds

6. Examine the Milky Way Galaxy
Your Galactic Address
It is now time to take a quick tour before you work to find your place in the universe, your galactic address….
Examine the Milky Way Galaxy
at different scales.