Credit Text: 

Courtesy of NASA; ESA; S. Baum and C. O'Dea, RIT; R. Perley and W. Cotton, NRAO/AUI/NSF; and the Hubble Heritage Team, STScI/AURA

Caption: 

The same physical processes that power microquasars such as MQ1 are also at work in active galaxies and quasars (at much larger scales). Here we can see the same structure (powerful central black hole, jets, lobes) in the active galaxy Hercules A. In both classes of systems, the energy comes from the infall of gas towards the central black hole.