earth science: chapter 25 part 1

Elliptical galaxy

Makes up about 60% of the glaxies we have discovered. They range in shape from round to oval and are very big

What is the dimensions of the galaxy you live in?

100,000 light years wide and 10,000 light years thick

What type of galaxy do we live in?

Spiral galaxy

what is the name of the galaxy that you live in?

The Milky Way

Big bang theory

a scientific theory that states that the universe began 10 to 20 billion years ago in an enormous explosion

Spiral galaxy

disk shaped with a greater concentration of star at the center. They often are pinwheeled shape

irregular galaxies

makes up only 10% of the known galaxies. Small and large Magellenic clouds.

Where within this galxy is our solar system?

on a spiral arm