Introduction / John M. Logsdon
Opening remarks / Daniel S. Goldin
Human spaceflight and American society : the record so far / Charles Murray
The spaceflight revolution revisited / William Sims Bainbridge
Mutual influences : U.S.S.R.-U.S. interactions during the space race / Asif Siddiqi
Making human spaceflight as safe as possible / Frederick D. Gregory
What if? Paths not taken / John M. Logsdon
Apollo and beyond / Buzz Aldrin
Breaking in the space shuttle / Robert Crippen
Going commercial / Charles Walker
Science in orbit / Mary Ellen Weber
Training for the future / T.J. Creamer
Expanding the frontiers of knowledge / Neil de Grasse Tyson
Pushing human frontiers / Robert Zubrin
About an element of human greatness / Homer Hickam
The ethics of human spaceflight / Laurie Zoloth
Future visions for scientific human exploration / James Garvin
Preparing for new challenges / William Shepherd.