What is the characteristic color of an emission nebula?
A) red
B) blue
C) yellow
D) green
Correct Answer:
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Q4: Compared to the air we breathe, how
Q5: What is the similarity in physical principle
Q6: We see an emission nebula predominantly in:
A)blue
Q7: Hot O and B stars embedded in
Q8: The predominant color of an emission nebula
Q10: What is the dominant spectral emission line
Q11: What is the predominant atomic or molecular
Q12: What process makes an emission nebula glow?
A)electric
Q13: What causes the characteristic red color of
Q14: A large emission nebula contains about how
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