How Did Harlow Shapley Determine Where the Centre of the Galaxy

question 2

Multiple Choice

How did Harlow Shapley determine where the centre of the galaxy lies?

• A)He plotted the distribution of open clusters.
• B)He plotted the distribution of globular clusters.
• C)He made star counts in every direction of the galactic disk.
• D)He measured the amount of dust obscuration in every direction of the galactic disk.

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