+**3c3** generally refers to celestial objects cataloged in the [Third Cambridge Catalogue](/wiki/Third_Cambridge_Catalogue), most famously powerful [radio galaxies](/wiki/Radio_Galaxy) and quasars. These distant, luminous sources provide crucial insights into the early universe and the extreme physics of cosmic phenomena.
+## See also
+- [Quasar](/wiki/Quasar)
+- [Active Galaxy](/wiki/Active_Galaxy)
+- [Black Hole](/wiki/Black_Hole)
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