In color photos, spirals typically have ________ arms with pink H II regions.
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Q51: A galaxy that was once a quasar
Q61: A billion solar mass black hole would
Q62: The lobes of a radio galaxy can
Q63: Most active galactic nuclei are powered by:
A)supermassive
Q64: _ galaxies are essentially featureless; their light
Q65: Hubble's Law starts as a plot of
Q68: Which of the following does the intensity
Q69: What is true of the lobes of
Q70: Synchrotron radiation produces a(n)_ spectrum.
A)continuous nonthermal
B)emission line
C)absorption
Q71: The magnetic fields carried by jets coming
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