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Question
Sunspots are ________ poles in the photosphere.Answer
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Related questions
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Why is the energy source for active nuclei like Seyferts thought to be compact?
A) The sources appear to be single stars in photos.
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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What advantage do radio astronomers have over optical ones in mapping the entire Milky Way?
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