Mitchell Begelman is Professor of Astrophysical and Planetary Sciences and Fellow of the Joint Institute for labouratory Astrophysics at the University of Colorado in Boulder. He is the author of many research papers on astrophysics and the co-author-with Sir Martin Rees-of the acclaimed popular science book, Gravity's Fatal Attraction, which won the 1996 American Institute of Physics Writing Award.

Mitchell Begelman is Professor of Astrophysical and Planetary Sciences and Fellow of the Joint Institute for labouratory Astrophysics at the University of Colorado in Boulder. He is the author of many research papers on astrophysics and the co-author-with Sir Martin Rees-of the acclaimed popular science book, Gravity's Fatal Attraction, which won the 1996 American Institute of Physics Writing Award.