Human spaceflight was a pivotal achievement in US history, and the spacesuits used are testimony to the technological advances involved in reaching this goal. Unfortunately, the materials in these suits are deteriorating rapidly, endangering the only records of some stages of the space race technology. Some materials, such as certain neoprene/natural rubber blends, are degrading due to poor manufacturing techniques necessitated by the accelerated pace of the space program. Other materials, such as plasticized polyvinyl chloride tubing, pose a threat to the rest of the artifact. Still others are deteriorating due to conditions to which they were exposed by the National Aeronautics and Space Administration (NASA) testing and use. Present methods of display and storage of these artifacts are not sufficient to delay the degradation process and, in many cases, are accelerating it. Treatment and storage decisions for these objects are not simple, as the suits contain a variety of materials, including metals, synthetic and natural textiles, synthetic and natural plastics, rubber, and adhesives, as well as paints and varnishes; clearly, an interdisciplinary approach to their conservation is needed. Discusses the results of testing some proposed storage conditions for these materials, which were designed with large collections and low budgets in mind. Recent research on the acceleration of aging in some materials by the conditions encountered in NASA's use and testing of the suits is reviewed. In addition, treatment considerations, with a focus on the treatments currently used on the suits, are discussed. -- AATA