Multiple Choice
Dust reddens starlight because it
A) re-emits the light it absorbs at red wavelengths.
B) emits mostly in the infrared due to its cold temperature.
C) is made mostly of hydrogen, which produces the red H-alpha emission line.
D) preferentially affects light at visible and shorter wavelengths.
E) primarily moves away from Earth.
Correct Answer:
Verified
Correct Answer:
Verified
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