Which common household phenomenon represents a close analogy to the distribution of galaxies in our universe?
A) a bowl of sugar crystals, uniformly distributed, close-packed, and evenly spaced apart
B) lemonade in a glass, surrounding small moving gas bubbles, the bubble's motion being similar to the Hubble flow
C) ice crystals forming on a cold, flat window in regular patterns
D) soap films surrounding air bubbles in soap suds
Correct Answer:
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