Material that falls into a black hole is lost from our knowledge, we can no longer learn anything about it as it has passed beyond the event horizon of the black hole. It does add to the mass and spin of the black hole, but that's the only thing we can know about it.
Karen was a graduate student at Cornell from 2000-2005. She went on to work as a researcher in galaxy redshift surveys at Harvard University, and is now on the Faculty at the University of Portsmouth back in her home country of the UK. Her research lately has focused on using the morphology of galaxies to give clues to their formation and evolution. She is the Project Scientist for the Galaxy Zoo project.