The biggest bang since the big one

[John Clark]

In the February 27 2020 Astrophysical Journal evidence is presented that in the distant past in a super giant galaxy 400 million light years away there was an explosion that released 100 billion times as much energy as the sun will during its entire lifetime.

Discovery of a Giant Radio Fossil in the Ophiuchus Galaxy Cluster

John K Clark 

[Lawrence Crowell]

This does indicate AGNs can occur somewhat late in cosmic evolution.

LC