Project Daedalus was a bold way to examine the Fermi Paradox head on and gave a partial answer interstellar travel is possible. The basis of this belief was the demonstration of a credible engineering design just at the outset of the space age that could in theory, cross the interstellar distances. In the future scientific advancement would lead to a refined and more efficient design. The absence of alien visitors would therefore require a different explanation because Project Daedalus demonstrated that with current, and near future, technology, interstellar travel is feasible. Therefore, another solution to the absence of extra-terrestrial visitation was necessary. A re-publication of the BIS Project Daedalus papers, first published in 1978. Includes one of the first technical papers on interstellar travel by Les Shepherd published in 1952 as well as a 1986 post-Project Daedalus review paper by Alan Bond and Tony Martin.