Astronomers measured the location of the Sun in the Milky Way Galaxy by
A) counting the number of stars.
B) plotting the position of globular star clusters.
C) plotting distribution of water molecules.
D) plotting the position of O and B stars.
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
Q5: Who was the first to measure the
Q6: One of the reasons that Kapteyn underestimated
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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