Maarten Schmidt discovered in 1963 in the more detailed investigation of the previously mapped by Martin Ryle cosmic radio sources that 3C 273 from Ryles Third Cambridge Catalogue ( "3C " ) a very high redshift had that does not match his appearance as a point -appearing single star.
De Maarten Schmidt huet 1963 bei Ënnersich vum Martin Ryle senger kartographéierter kosmescher Radioquelle entdeckt, datt den 3C 273 aus dem Ryle sengem Third Cambridge Catalogue („3C“) eng ganz héich Routverrécklung huet, déi net zu engem punktfërmegen Eenzelstär passt.