One of the most important features that must be explained by models during the formation of the galaxy is the ____.
A) formation of spiral arms
B) differences in age and metallicity of stars, especially in the halo
C) formation of the central supermassive black hole
D) accumulation of dark matter in the corona
E) importance of spiral arms to star formation
Correct Answer:
Verified
Q49: What observed feature of the Milky Way
Q50: Which statement about stellar populations is correct?
A)
Q51: Elements above hydrogen and helium come from
Q52: A "galactic fountain" is _.
A) a stream
Q53: _ variable stars are useful in measuring
Q55: The best explanation for the activity at
Q56: O and B stars only occur in
Q57: Why do astronomers conclude that the spiral
Q58: At the center of our galaxy, _.
A)
Q59: What is the correct ordering of galactic
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