One of the reasons that Kapteyn underestimated the size of the Milky Way and Shapley overestimated it is that they did not recognize the ___________.
A) effects of the motion of the Sun from the center
B) dimming effect of interstellar dust
C) age of the globular clusters
D) existence of dark matter
Correct Answer:
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Q1: What is the approximate diameter of the
Q2: What fraction of the Galaxy's mass is
Q3: The Sun lies _ the disk of
Q4: Astronomers measured the location of the Sun
Q5: Who was the first to measure the
Q7: The Solar System is located about _
Q8: The Solar System is about 5 billion
Q9: The gas and dust in the disk
Q10: The estimated age of the Milky Way
Q11: The average distance between stars in the
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