Core Viewpoint - The Japan Aerospace Exploration Agency (JAXA) has released preliminary investigation results regarding the failure of the H3 rocket launch in December 2025, indicating that damage at the satellite and rocket connection point may have caused the failure [1] Group 1: Launch Details - On December 22, 2025, JAXA attempted to launch the "Guide 5" navigation satellite using the H3 rocket, but the mission failed when the second-stage engine stopped burning prematurely about 20 minutes after liftoff [1] - The failure resulted in the satellite not reaching its intended orbit [1] Group 2: Investigation Findings - Initial findings suggest that the satellite fairing separation may have caused damage to the rocket's satellite mounting mechanism, which affected the liquid hydrogen fuel tank's pressure, leading to the premature shutdown of the second-stage engine [1] - Images captured by onboard cameras indicate that the satellite may have detached from the rocket during the separation of the first and second stages, potentially falling into the designated ocean area for the first stage's descent [1] Group 3: Future Actions - JAXA plans to conduct further investigations to determine the specific reasons behind the damage at the satellite and rocket connection point during the fairing separation [1]

Core Viewpoint - Japan's Aerospace Exploration Agency announced the postponement of the H3 rocket launch originally scheduled for February 1 due to ongoing investigations into the previous launch failure [1] Group 1: Launch Postponement - The planned launch of H3 rocket No. 9, which was to carry a satellite for the Quasi-Zenith Satellite System, has been delayed with a new date yet to be determined [1] - The agency is fully committed to investigating the cause of the previous launch failure and will announce a new launch date once confirmed [1] Group 2: Previous Launch Failure - The H3 rocket No. 8 mission failed on December 22, 2025, due to an anomaly during the satellite fairing separation and a drop in pressure in the second stage liquid hydrogen fuel tank, leading to premature engine shutdown [1] - The failure resulted in the loss of the "Landsat 5" navigation satellite, marking another setback for the H3 rocket since its first failure in March 2023 [1] Group 3: Quasi-Zenith Satellite System - The Quasi-Zenith Satellite System, known as Japan's version of GPS, aims to enhance the accuracy of satellite positioning and is designed to reduce reliance on foreign navigation systems [1] - The system is planned to consist of seven satellites, with five already in their designated orbits, providing coverage across Japan for mobile and automotive navigation services [1]