Why did Hubble think the Cepheid variables he saw in "Fuzzy Patches" were outside the Milky Way?
A) They were dim.
B) They had a red shift character.
C) Their brightness varied.
D) They were small.

Question

Quizplus · Accepted Answer

Hubble concluded that the Cepheid variables he observed in "fuzzy patches" (later identified as other galaxies) were outside the Milky Way because they were dimmer than any such stars in our galaxy. This indicated they were much farther away than previously thought, leading to the realization that these patches were not part of the Milky Way but separate galaxies.

Why Did Hubble Think the Cepheid Variables He Saw in "Fuzzy