The Japan Aerospace Exploration Agency Global Observing SATellite for Greenhouse gases and Water cycle (GOSAT-GW), nicknamed IBUKI GW, is an Earth-observation program launched on 29 June 2025. It carries the Advanced Microwave Scanning Radiometer 3 (AMSR3) for enhanced water-cycle observations and the TANSO-3 greenhouse-gas instrument, continuing JAXA and Japanese environmental-agency observations; JAXA reports nominal orbit entry and early AMSR3 and TANSO-3 data collection.