Sending humans to the Moon was arguably the most difficult technological undertaking in all of history. For sure, the best of America's scientists and engineers were taxed to the limit in order to accomplish nine manned flights to the Moon, six of which involved landing on the crater-filled lunar surface. The scientific results of the Apollo program were staggering. Much that was learned during Apollo required scientists to revise their basic understanding and theories about the Moon's formation and history. And the samples and data collected during Apollo will keep those scientists busy for decades to come.
This site documents the NASA Apollo missions to the moon from 1969-1972. The site includes mission summaries, crew bios, flight plans, communication transcripts, and more. Special features of the site are video and audio files, and supplemental commentary by most of the Apollo astronauts. Technical descriptions of the tools and equipment help readers understand the astronauts' work. This site offers a large collection of materials concerning the nuts and bolts of the Apollo flights with some supplemental historical background added for context. The site navigation is a little cluttered but the available information gives an important window into the workings of NASA and the Apollo missions.