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