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Tonyt Tonyt
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A month ago

If the redshifts of quasars arise from the expansion of the universe, yet they have brighter magnitudes than galaxies with the same redshifts, what must be generally true of quasars?



They are very small.



They are within the Local Group.



They are moving toward Earth with a large radial velocity.



They emit a very large amount of energy per second.

Textbook 
ASTRO

ASTRO


Edition: 3rd
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nnennennenne
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A month ago
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