Knowra3C 273Linked fromLinked fromThe 4 pages that link to 3C 273, each with the reason it gives.All 4Broader topic 3Related 1Active galactic nucleusBroader topic: It established quasars as distant, extremely luminous sources rather than nearby stars.QuasarBroader topic: Its spectrum and distance established that at least some star-like radio sources lie far beyond the Milky Way.Martin RyleBroader topic: Cambridge radio work helped establish the astronomical importance of this compact source.