+3C 9 is a [radio source](/wiki/Radio_Source), one of the earliest celestial objects cataloged for its strong emission of [radio waves](/wiki/Radio_Waves). Discovered through early astronomical surveys, its distant light reveals insights into the universe's vast, ancient expanse.
+## See also
+- [Quasar](/wiki/Quasar)
+- [Astronomy](/wiki/Astronomy)
+- [Telescope](/wiki/Telescope)
... 1 more lines