太阳活动对卫星的影响

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损失583颗卫星!太阳活动让马斯克“星链”大批坠落,平均寿命缩至5年【附卫星互联网行业市场分析】
Sou Hu Cai Jing· 2025-06-10 10:31
Group 1 - The recent increase in the number of SpaceX's Starlink satellites falling from orbit has raised significant concerns, with a staggering 316 satellites expected to fall in 2024, a 259% increase compared to 2023 [2][6] - Since the launch of the Starlink project in 2019, the number of fallen satellites has escalated from 2 in 2020 to 78 in 2021, and 99 in 2022, totaling 583 satellites lost to date, which is approximately 1 in every 15 satellites [2][3] - NASA's research indicates a clear correlation between solar activity and satellite falls, with increased solar activity leading to atmospheric expansion that accelerates orbital decay for low Earth orbit (LEO) satellites [2][6] Group 2 - The Starlink project, initiated by SpaceX in 2015, aims to provide global internet access through a constellation of satellites, particularly targeting remote and rural areas [4] - The United States leads globally in the number of satellites in orbit, with 5,165 satellites as of May 2023, and accounted for nearly 50% of global launch attempts in 2023 [4] - SpaceX has not yet issued an official statement regarding the reasons behind the satellite falls, but studies suggest that stronger geomagnetic activity correlates with faster re-entry rates of satellites [6] Group 3 - The satellite falls have highlighted technical shortcomings in the Starlink project, raising discussions about space sustainability, the increase of space debris, and environmental impacts [3][6] - SpaceX claims that its satellites are designed to burn up upon re-entry, but actual cases have shown exceptions, posing potential threats to ground safety [3] - The limited thrust of the ion thrusters used in Starlink satellites makes it challenging to maintain stable orbits, contributing to the increased risk of satellite falls [3]
马斯克的“星链” 卫星突然大批坠落!发生了什么?
第一财经· 2025-06-10 03:46
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].