How do we know that the quasars are at large distances?
A) They are extremely dim
B) They have large redshifts
C) They have large parallaxes
D) They are greatly obscured by interstellar dust
Correct Answer:
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Q6: Why do Seyfert Galaxies strengthen the case
Q7: Quasars are currently believed to be
A)The brightest
Q8: Quasars were originally discovered as
A)Strong radio sources
Q9: Which of the following is true of
Q10: Quasars all have great distances.Why are there
Q12: For a typical luminous radio galaxy,most of
Q13: Why was it difficult for astronomers to
Q14: How do astronomers explain the "superluminal" motions
Q15: It is thought that most large galaxies
Q16: The spectra of quasars reveal lines of
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