The Canadian Space Agency (CSA) is Canada's national space agency. Its mandate is to promote the peaceful use and development of space, advance knowledge through space science, and make space science and technology useful for Canadians. CSA works with Canadian industry, academia, other government organizations, and international partners across Earth observation, robotics, astronomy, exploration, and human spaceflight. Its best-known contributions include the Canadarm robotics line, RADARSAT Earth-observation missions, Canadian astronaut operations, and current work on Canadarm3 for the Lunar Gateway.