Question: How does interstellar reddening affect our ability to study spectral lines from stars? A. It eliminates our ability to detect blue lines. B. It makes

How does interstellar reddening affect our ability to study spectral lines from stars?
A. It eliminates our ability to detect blue lines.
B. It makes it easier to detect spectral lines from red stars.
C. It has little effect, because the positions of stellar spectral lines are not affected.
D. It has a major effect, because it can be confused with the Doppler effect.

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