This is a Broad Agency Announcement (BAA) from NASA's SBIR/STTR Program to solicit research and development proposals from small businesses for Phase I and II projects. The BAA itself provides the overarching objectives, funding information, and eligibility criteria, while specific funding opportunities with detailed research topics will be released in separate appendices. NASA anticipates releasing 2 to 3 of these appendices each fiscal year. The location for performance of services is not specified.