我国计划向日地引力平衡L5点发射“羲和二号”

Core Viewpoint - The article discusses the launch plan for China's solar exploration satellite "Xihe-2," which is scheduled to be sent to the Sun-Earth L5 point between 2028 and 2029, marking a significant advancement in solar observation technology [1]. Group 1: Project Overview - "Xihe" is named after the mother of the sun in ancient Chinese texts, and the first satellite "Xihe-1" was successfully launched in October 2021, initiating China's solar exploration era [2]. - "Xihe-2" will provide a new perspective for solar observation, operating from the L5 point, which is different from "Xihe-1" that orbits the Earth [2][3]. Group 2: Technical Capabilities - "Xihe-2" will enable precise measurements of solar magnetic fields and activities, contributing to the establishment of a comprehensive three-dimensional physical model of solar eruptions [5]. - The satellite will enhance China's space weather forecasting capabilities, allowing for early detection of solar activities such as solar flares and coronal mass ejections, providing an advance warning of four to five days compared to Earth-based observations [5]. Group 3: Operational Advantages - Positioned at the L5 point, "Xihe-2" will maintain stable orbit with minimal energy consumption, with a designed operational lifespan of up to seven years [3]. - The satellite's unique location will offer a new observational perspective, as no other solar probes have been stationed at the L5 point, thus providing valuable data for solar research [3].