Refer to the accompanying photos of an elliptical galaxy and
a spiral galaxy to answer the following:
a. Which image (A or B) is an elliptical galaxy?
b. Which of these galaxies appears to contain more young,
hot massive stars? How did you determine your answer?
c. When stars are born from a cloud of dust and gases, large
and small stars form at about the same time. Which group of stars, the large or
the small, will die out first? Over time, how will this affect the color of the
light we observe coming from this group of stars?