日本确认导航卫星发射失败

Core Viewpoint - The Japanese government confirmed the failure of the "Quasi-Zenith Satellite System" satellite "Michibiki 5" launched on December 22, 2023, due to the H3 rocket's second-stage engine burning prematurely, marking another setback for Japan's domestic launch capabilities following the H3 rocket's previous failure in March 2023 [1][2]. Group 1: Launch Failure Details - The H3 rocket's second-stage engine failed to ignite properly, leading to the satellite not reaching its intended orbit [1]. - This incident follows a previous failure in March 2023, where the H3 rocket was also unable to complete its mission due to an electrical system anomaly [2]. Group 2: Implications for Japan's Space Program - The failure of the "Michibiki 5" satellite launch may delay Japan's plans to achieve a fully independent navigation system, as the satellite was intended to be the sixth in a series that aims to reduce reliance on foreign GPS systems [1]. - The H3 rocket has now experienced two failures out of seven launches, which is a significant concern compared to the 98% success rate of its predecessor, the H2A rocket [2].