A young protostar is __________ than the Sun even though its surface temperature is __________.
A) less luminous;hotter
B) larger;cooler
C) more luminous;cooler
D) smaller;hotter
Correct Answer:
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Q19: The only effect of interstellar dust is
Q20: We observe molecular hydrogen gas 
Q21: "Weather" in the interstellar medium is produced
A)
Q22: If you wanted to study regions where
Q23: Of the following processes at work in
Q25: A typical molecular cloud has a temperature
Q26: Magnetic fields inside a molecular cloud act
Q27: Molecular clouds are best observed at _
Q28: Interstellar clouds are
A) hydrogen gas,condensed out of
Q29: Molecular cloud cores are places where you
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