Multiple Choice
Which of the following is NOT a way astronomers discover clouds of interstellar matter that have a large amount of dust in them?
A) by blocking the light of stars behind them
B) by reflecting nearby starlight
C) because they make stars behind them look redder than they should be
D) by giving off infrared radiation appropriate to their temperature
E) by giving off x-rays from hot gas surrounding the dust cloud
Correct Answer:

Verified
Correct Answer:
Verified
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