Multiple Choice
How do we know that the Milky Way has a spiral structure?
A) By plotting the distances and directions of objects known to be in spiral arms
B) By viewing the galaxy from a point well above its plane
C) By observing the changing conditions as the sun enters a spiral arm
D) By observing the gravitational influence of the arms on nearby galaxies
Correct Answer:
Verified
Correct Answer:
Verified
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