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