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Question
Conditions inside the darkest, densest nebulae are best studied with radio emission from molecules.Answer
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Related questions
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A galaxy with a blueshift is moving ________ Earth.
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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.
C) The light can vary over short time intervals.
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In active galaxies, their central engines may be temporarily fed by
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Virtually the entire disk of the Galaxy has been mapped using the ________ wavelength.