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Question
The rapid decline in quasars 10 billion years ago signifies a rapid decline in galactic mergers.Answer
This answer is hidden. It contains 4 characters.
Related questions
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Quasar is short for what? Is this true of all of them?
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A galaxy with a blueshift is moving ________ Earth.
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The spiral arms are blue from the presence of Population ________ stars in them.
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Why is the energy source for active nuclei like Seyferts thought to be compact?
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B) Their energy appears to be non-stellar synchrotron radiation.
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In active galaxies, their central engines may be temporarily fed by
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Describe the cycle of life and death we observe in the spiral arms.
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Why aren't there young stars in the halo?
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What advantage do radio astronomers have over optical ones in mapping the entire Milky Way?
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How did Herschel try to map our Galaxy 200 years ago, and why did he fail?
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Virtually the entire disk of the Galaxy has been mapped using the ________ wavelength.