宇宙科学研究所
By the 1960s, two organizations, the Institute of Space and Astronautical Science (ISAS) and the National Space Development Agency of Japan (NASDA), were developing their own rockets. After experiencing numerous failures in the 1990s and 2000s, ISAS and NASDA merged — along with the National Aerospace Laboratory of Japan (NAL) — to form the unified Japan Aerospace Exploration Agency (JAXA) in 2003.