The two most distant quasars known have red shifts of 4.4 and 4.43.
This technique is likely to let us discover many very distant quasars.
She nodded, the tears in her eyes sparkling like distant quasars.
This is 100 million years earlier than light from the most distant previously known quasar.
The Sloan survey has now detected light from four such distant quasars.
The most distant quasar, discovered recently, has a red shift of 4.43.
The yellow line is the worldline of the most distant known quasar.
Astron will also observe the very distant and powerful quasars.
Astronomers assume that eventually even more distant quasars will be detected.
There were also serious concerns regarding the idea of cosmologically distant quasars.