Despite varying masses, all spiral galaxies look essentially the same.
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Q14: Irr II galaxies may be the result
Q15: The Local Group of galaxies spans about
Q16: Except for the Local Group, galaxies seem
Q17: Among the ellipticals, E0 types look the
Q18: Unlike spirals, elliptical galaxies do not contain
Q20: There are more giant elliptical than dwarf
Q21: Active galaxies emit most of their radiation
Q22: Space itself is expanding.
Q23: While our Magellanic Clouds are irregulars, the
Q24: Quasars are the brightest objects in the
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