我国计划发射“羲和二号”

Core Viewpoint - China plans to launch the "Xihe-2" solar probe to the Sun-Earth L5 point between 2028 and 2029, marking a significant advancement in solar observation technology [1][2] Group 1: Project Overview - The "Xihe-2" project was announced during a scientific seminar, following the successful launch of the first solar probe, "Xihe," in October 2021 [1] - Unlike "Xihe," which orbits Earth, "Xihe-2" will provide a new perspective on solar observation from the L5 point, one of five gravitational balance points between the Earth and the Sun [1][2] Group 2: Technical Capabilities - "Xihe-2" is designed to conduct detailed measurements of solar magnetic fields and activities, aiming to establish a comprehensive three-dimensional physical model of solar eruptions [2] - The probe will enhance China's capabilities in space weather forecasting, allowing for advanced warnings of solar events such as solar flares and coronal mass ejections [2] Group 3: Strategic Importance - Positioned at the L5 point, "Xihe-2" can maintain a stable orbit with minimal energy consumption and has a design lifespan of up to seven years [2] - The probe's vantage point will enable it to observe solar activity four to five days in advance compared to Earth-based observations, providing critical preparation time for emergency responses to space weather events [2]