These "quasi-stellar radio sources" are among the brightest & most distant objects in the universe
The quasar 
which appears brightest in our sky is the ultraluminous 3C ... J. Greenstein and M. 
Schmidt, 1964, The Quasi-Stellar Radio Sources 3C 48 and 3C,... [DOC] [TLE] Newly discovered quasars may help us understand the Big Bang [PAR] Sep 12, 2016 ...