From the Chandra X-ray Observatory site (where you can find lovely larger versions of this image):
This composite image shows the jet from a black hole at the center of a galaxy striking the edge of another galaxy, the first time such an interaction has been found. In the image, data from several wavelengths have been combined. X-rays from Chandra (colored purple), optical and ultraviolet (UV) data from Hubble (red and orange), and radio emission from the Very Large Array (VLA) and MERLIN (blue) show how the jet from the main galaxy on the lower left is striking its companion galaxy to the upper right. The jet impacts the companion galaxy at its edge and is then disrupted and deflected, much like how a stream of water from a hose will splay out after hitting a wall at an angle.
See also a chat on NPR about this, between Melissa Block and Daniel Evans of the Harvard-Smithsonian Center for Astrophysics.
I talk a lot more about this, and a few general aspects of black holes in a post over at Correlations. I even throw in a couple of equations to [ensure that not too many readers get to the end of the post] give you an idea of what some of these ideas look like in our notebooks. Go and have a look!
-cvj
