How do we know that quasars are no larger than the solar system?
A) They vary in brightness on a timescale of days or weeks
B) They appear pointlike when viewed through a telescope
C) They contain black holes,which must be small
D) They are too luminous to be very large
Correct Answer:
Verified
Q1: Which of the following is a good
Q3: Since quasars are thought to be at
Q4: About how large is a 1 million
Q5: Some quasars vary in brightness in only
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
Q11: How do we know that the quasars
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