Multiple Choice
How do astronomers infer the presence of magnetic fields in molecular clouds?
A) by measuring the amount of interstellar reddening
B) by measuring the Doppler shifts of emission lines from gas clumps in the cloud
C) by measuring the infrared light emitted by the cloud
D) by measuring the polarization of starlight passing through the cloud
E) by measuring the amount by which gravity is reduced
Correct Answer:
Verified
Correct Answer:
Verified
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