urn:nasa:pds:context:agency:agency.nasa 1.0 1.7.0.0 Product_Context nasa 2016-10-01 1.0 extracted metadata from PDS3 catalog and modified to comply with PDS4 Information Model National Aeronautics and Space Administration NASA conducts its work in three principal organizations, called mission directorates: Aeronautics: pioneers and proves new flight technologies that improve our ability to explore and which have practical applications on Earth. Human Exploration and Operations: focuses on International Space Station operations and human exploration beyond low Earth orbit. Science: explores the Earth, solar system and universe beyond; charts the best route of discovery; and reaps the benefits of Earth and space exploration for society.