Which kind of active galaxies has been observed at the greatest distances from us
A) Seyfert galaxies
B) radio galaxies
C) quasars
Correct Answer:
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Q56: What was the first evidence that quasars
Q57: Seyfert galaxies
A)are more common in close pairs
Q58: Galaxies may contain a supermassive black hole
Q59: Statistical evidence
A)can be used to draw conclusions
Q60: Centaurus A is a radio galaxy that
Q62: The diagram illustrates physical size and angular
Q63: Why do astronomers believe supermassive black holes
Q64: Recent high resolution radio observations show that
Q65: Astronomers who discovered quasars found that they
Q66: Jet-shaped regions of radio and optical emission
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