What causes the dimming of starlight in the interstellar medium?
A) dust particles
B) ionized hydrogen
C) neutral hydrogen
D) molecular gas
Correct Answer:
Verified
Q32: How can molecular clouds be observed?
A)by using
Q33: Which of the following is NOT evidence
Q34: Stars with masses below a certain threshold
Q35: Which of the following are small dark
Q36: The formation of one of the following
Q38: How do absorption lines from interstellar gas
Q39: Where are stars born?
A)reflection nebulae
B)dense molecular clouds
C)HII
Q40: Why does the main sequence have a
Q41: How did observations at the Sudbury Neutrino
Q42: Why do higher mass stars live shorter
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