This document presents a review of a two-day meeting to examine the concepts, technology, and application of ultralightweight structures in space. These structures are referred to here as Gossamer Spacecraft, and they represent a generic class of space vehicle or structure characterized by a low mass per unit area ... Typical Gossamer concepts include the solar sail, the space tether, and various two- and three-dimensional, large, lightweight structures that can be deployed or assembled in space. The Gossamer Spacecraft has a high potential for use as a transportation deveice (solar sail), as a science instrument (reflecting or occulting antenna), or as a large structural component for an enclosure, manned platform, or other human habitat. Inflatable structures appear to be one possible building element for large ultralightweight structures in space." -- P. vii.