Active galaxies emit most of their radiation as visible light.
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Q16: Except for the Local Group, galaxies seem
Q17: Among the ellipticals, E0 types look the
Q18: Unlike spirals, elliptical galaxies do not contain
Q19: Despite varying masses, all spiral galaxies look
Q20: There are more giant elliptical than dwarf
Q22: Space itself is expanding.
Q23: While our Magellanic Clouds are irregulars, the
Q24: Quasars are the brightest objects in the
Q25: On average, active galaxies are rare and
Q26: The Tully- Fisher relation allows us to
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