Quiz 13. What Kinds Of Galaxies?

Shown on the screen are four galaxies. Briefly describe each one, answering the following questions:

1. Is it spiral, elliptical, irregular, or peculiar? Why do you think so?
2. It is still forming stars, or are all the stars old?
3. Will it look much the same in a billion years, or will it have changed a lot?

Galaxy A:

Galaxy B:

Galaxy C:

Galaxy D: