earth science: chapter 25 part 1
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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
