1克“黄豆”威力堪比TNT炸药？我们如何应对空间碎片威胁→

Core Insights - The 2026 Space Debris Conference opened in Riyadh, Saudi Arabia, highlighting the urgent need for international cooperation to address the growing threat of space debris [1] - The number of space debris has increased rapidly, with over one million pieces larger than 1 cm classified as potentially harmful, and smaller debris potentially numbering in the billions [2] Group 1: Space Debris Threat - Space debris poses significant risks, as demonstrated by the damage to the Shenzhou 20 spacecraft's window caused by micro debris, leading to a delayed return [1] - A simulation showed that a piece of debris weighing as little as 1 gram can create a crater significantly larger than its size when impacting at speeds of 7 km/s [1][2] Group 2: Sources of Space Debris - Major sources of space debris include rocket remnants, defunct satellites, operational waste, and natural micrometeoroids [2] - The rapid increase in debris is attributed to the construction of low-Earth orbit satellite internet systems by various countries [2] Group 3: China's Response to Space Debris - China has implemented multiple protective measures for its space missions, including the installation of space debris protection devices on the space station, likened to a "space bulletproof vest" [2][3] - The space station has enhanced its collision avoidance capabilities through improved trajectory prediction and collision warning systems [3] Group 4: Emergency Response and Data Collection - In the event of a collision, the space station is equipped with systems for monitoring and addressing damage, allowing astronauts to conduct emergency repairs [3][4] - The successful return of the Shenzhou 20, despite window damage, provided valuable data on the impact of micro debris, aiding future spacecraft design [4]