Moonfall

ACKNOWLEDGMENTS

I am indebted for assistance, advice, and encouragement to: Franklin R. Chang-Diaz of the Lyndon B. Johnson Space Center; Ted Dunham and Bruce Koehn of the Lowell Observatory; Terry Gipson, St. Louis Science Center; Sergei Pershman, University of Pennsylvania; Eileen Ryan, Kitt Peak National Observatory; Jim Sharp, formerly of the Smithsonian Air amp; Space Museum; George Tindle, U.S. Customs Service; and Judith A. Tyner, California State University, Long Beach.

The manuscript also profited from the guidance of Fred Espenak of NASA Goddard, both directly and from his excellent book, Fifty Year Canon of Solar Eclipses: 1986-2035 (Sky Publishing Corp., Cambridge, MA, 1988). Thanks to Ben Bova for permission to use his version of Moonbase, the details of which were derived particularly from Welcome to Moonbase (Ballantine Books, 1987).

Geoff Chester of the U.S. Naval Observatory and science fiction writer Walt Cuirle of the Isaac Asimov Seminar were subjected to constant harassment during the production of this book. They bore up patiently and both are, I believe, still talking to me.

Maureen McDevitt helped the manuscript through several incarnations, and Caitlin Blasdell provided her usual good judgment at HarperPrism. Thanks also to Dolores Dwyer for editorial assistance.

Ron Peiffer assisted with the Coast Guard segments, and Lewis Shiner brought the duct tape.