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How many types of galaxies are there in the Hubble Diagram?
5
4
3
2
Elliptical galaxies are:
teenaged
young
old
Spiral galaxies are:
A galaxy that isn't a spiral or an elliptical is called a(n):
weird galaxy
nebula galaxy
unusual galaxy
irregular galaxy
What color are young galaxies and stars?
blue
purple
green
red
What color are old galaxies and stars?
One galaxy can go through all the main galaxy types (over time) during its lifetime.
