马斯克的“星链” 卫星突然大批坠落！发生了什么？

Core Viewpoint - The article discusses the increasing number of Starlink satellites launched by SpaceX and the associated risks of satellite re-entry and debris, highlighting the significant rise in satellite falls from 2020 to 2024, particularly due to solar activity [1][3][4]. Group 1: Satellite Launch and Performance - SpaceX has launched over 7,000 Starlink satellites, with a target of 42,000, making it the largest commercial satellite network globally [1]. - The number of Starlink satellites that fell from orbit has increased significantly, with 316 satellites reported to have fallen in 2024 alone [2][3]. Group 2: Research Findings - A study published by NASA's Goddard Space Flight Center indicates that from 2020 to 2024, 1,190 low Earth orbit satellites fell, with 583 of them being Starlink satellites, accounting for nearly half of the total [3]. - The study attributes the increased rate of satellite re-entry to stronger solar activity during the 25th solar cycle, suggesting that higher geomagnetic activity accelerates the re-entry process of satellites [3][4]. Group 3: Risks and Concerns - The FAA has raised concerns about the potential risks associated with SpaceX's satellite system, predicting that by 2035, 28,000 pieces of debris could re-enter the atmosphere, posing a risk of injury or death to individuals on the ground [4]. - Despite SpaceX's claims that decommissioned satellites burn up upon re-entry, the increasing number of satellite launches raises concerns about the potential for debris and the need for contingency plans from both governments and companies [5].