This particular piece of work on the Teacup Galaxy has provided new insight into how the black holes [drive energy] in ordinary galaxies, they appear to be capable of driving jets of charged particles that collide into the gas. You could imagine the ‘jet’ as like a water cannon being driven into a crowd of people - the water cannon collides with the crowd and causes it to break up and disperse rapidly. In this analogy, the crowd represents the gas in the galaxy that is trying to form stars, but is destroyed by the jet.