[One] possibility is that the swirling disk of material surrounding the black hole switched the way that it gave off energy. Instead of radiating energy as quasar jets of light, the disk started throwing off kinetic energy, in the form of a shock wave of gas moving into the surrounding space. The high-resolution Hubble image supports [that] explanation."
Recently Hanny appeared at a recent meeting of the American Astronomical Society where a paper was presented based on follow-up images taken by the Hubble telescope. She's getting a good amount of (well deserved) press again as the excitement over her discovery continues. But enough of this second-hand reporting...check out the full story yourself at MSNBC's Cosmic Log.
And hopefully one day I can write a post about your next discovery!