日本确认：发射失败 卫星未进入预定轨道！火箭发动机提前“结束燃烧” 抛物线坠下云端

Core Points - The H3 rocket's 8th launch from the Tanegashima Space Center in Kagoshima Prefecture, Japan, failed to place the "Guide 5" satellite into its intended orbit due to an early shutdown of the second-stage engine during flight [1][2] - The launch was initially scheduled for December 7 but was postponed twice due to technical issues, including a malfunction in the inertial measurement unit and a cooling water supply problem [3] Group 1 - The H3 rocket is part of Japan's efforts to establish a domestic satellite positioning system, aiming to create a seven-satellite constellation that does not rely on foreign satellites for location information [3] - The "Guide" satellite is designed to enhance the accuracy of positioning information for devices like smartphones and to provide emergency earthquake alerts in areas without radio coverage [3]