Multiple Choice
Which component of the Milky Way Galaxy accounts for interstellar extinction, the dimming of light from distant objects?
A) cool hydrogen gas
B) so-called hidden or missing matter, since its absorbing properties render it invisible in the Galaxy
C) molecules such as H2 and CO, which are strong absorbers, in molecular clouds
D) dust
Correct Answer:
Verified
Correct Answer:
Verified
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