If you wanted to study regions where star formation is currently happening you could use
A) Halpha emission to look for O and B stars.
B) a radio telescope to search for molecular cloud cores.
C) infrared emission to identify T Tauri stars.
D) All of the above
Correct Answer:
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Q17: Star formation is a quiet and tranquil
Q18: The dust in the interstellar medium comes
Q19: The only effect of interstellar dust is
Q20: We observe molecular hydrogen gas 
Q21: "Weather" in the interstellar medium is produced
A)
Q23: Of the following processes at work in
Q24: A young protostar is _ than the
Q25: A typical molecular cloud has a temperature
Q26: Magnetic fields inside a molecular cloud act
Q27: Molecular clouds are best observed at _
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