Fluorescence is a characteristic of ________.
A) emission nebulae
B) dark nebulae
C) planetary nebulae
D) reflection nebulae
E) blue nebulae
Correct Answer:
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Q14: Fluorescence occurs when _.
A)visible light is converted
Q15: A red star is _ our Sun.
A)hotter
Q16: Why did Hubble think the Cepheid variables
Q17: When viewed through an optical telescope,planetary nebula
Q18: The red color of emission nebulae comes
Q20: Cepheid Variables are stars whose brightness varies
Q21: What is the dominant factor in the
Q22: A star with the same color as
Q23: Degenerate matter can have densities 1 million
Q24: A main-sequence star like our sun is
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