NASA STI Repository (NTRS)A variety of scientific and technical information (STI) created or funded by NASA.
The NASA STI Repository (NTRS) provides access to aerospace-related citations, 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.