does not, however, obscure his major contribution: he showed that globular clusters were in only one area of the sky (near the constellation Sagittarius) and that they had a spherical distribution. The center of the sphere, said Shapley, not the Sun, was the center of our galaxy.
The first radio studies of the Galactic Center took place in 1960, when G. W. Raugoor and Jan Oort found that hydrogen gas in the inside few hundred light years of the Milky Way lay in a small nuclear disk.
