The NASA STI Program The NASA Scientific and Technical Information (STI) Program is a critical component in the worldwide activity of scientific and technical aerospace research and development. The NASA STI Program acquires, processes, archives, announces, and disseminates NASA STI and acquires worldwide STI of critical importance to NASA and the Nation. Collected from U.S. and international sources, STI is organized according to content prior to being added to the NASA STI Repository (NTRS) launch .

Source: The NASA STI Program