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.

Question

Quizplus · Accepted Answer

Harlow Shapley plotted the distribution of globular clusters and used their positions to estimate the center of the galaxy. He found that the concentration of globular clusters was highest in the direction of the constellation Sagittarius, which he identified as the center of the galaxy.

How Did Harlow Shapley Determine Where the Centre of the Galaxy