Multiple Choice
Who developed the classification system that divides galaxies into spiral, elliptical, and irregular and classifies spirals by the size of their nuclear region and the tightness of the winding of their arms?
A) Ejnar Hertzsprung
B) Edwin Hubble
C) Sir John Herschel
D) Olaus Roemer
Correct Answer:

Verified
Correct Answer:
Verified
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