The NASA STI Repository (also known as the NASA Technical Reports Server (NTRS)) provides access to NASA metadata records, full-text online documents, images, and videos. The types of information included are conference papers, journal articles, meeting papers, patents, research reports, images, movies, and technical videos – scientific and technical information (STI) created or funded by NASA.

By maintaining the Repository, the STI Program supports NASA’s strategic goals to

• Expand the frontiers of knowledge, capability, and opportunity in space.
• Advance understanding of Earth and develop technologies to improve the quality of life on our home planet.
• Serve the American public and accomplish our Mission by effectively managing our people, technical capabilities, and infrastructure.

We invite you to begin searching NASA STI Repository.

Registered content in the NASA STI Repository (previously referred to as access to the NASA Technical Reports Server-Registered (NTRS-R)) includes the complete STI collection of NASA and non-NASA aerospace materials and is available to NASA civil servants, contractors, and grantees.

Members of the NASA community – NASA civil servants, contractors, and grantees - who have access to registered content in the NASA STI Repository can use the sign-in button to authenticate via their Agency launchpad credentials. Registered content includes the complete STI collection. 

NASA civil servants, contractors, and grantees who need access to registered content in the repository, please visit https://nasa.sharepoint.com/sites/NASASTIProgram/SitePages/STI-Repository-(NTRS).aspx.

Access to registered content is only available through the NASA Application Management System (NAMS) and requires an established NASA Agency User Identity (AUID) and a NASA Launchpad password. These credentials are managed through the NASA Identity and Access Management (IdMAX) system.