Can you or someone at the observatory recommend some good books of the semi-technical nature, on black holes?
There is a selection of "further reading" books online at http://chandra.harvard.edu/resources/further.html
You may be particularly interested in:
- K. Thorne, Black Holes and Time Warps, W.W. Norton, 1994.
- M. Begelman and M. Rees, "Gravity's Fatal Attraction", Scientific American Library, 1996.