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马斯克的“星链”卫星,突然开始大批坠落地球,发生了什么?
Sou Hu Cai Jing· 2025-07-02 09:14
Core Insights - The "Starlink" satellite network operated by SpaceX is experiencing a significant increase in satellite re-entries due to heightened solar activity, with over 120 satellites falling back to Earth in January 2025 alone [1][5][18] Group 1: Satellite Operations and Performance - As of June 2025, Starlink has launched over 8,800 satellites, with approximately 7,600 currently operational, accounting for two-thirds of active satellites in Earth's orbit [3] - Between 2020 and 2024, 523 Starlink satellites prematurely re-entered the atmosphere, with an average of 3 satellites re-entering daily in 2024 [7][18] - The design and operational strategy of Starlink, including the planned retirement of Gen1 satellites to make way for the more advanced V2 models, has contributed to the increased rate of satellite re-entries [14][18] Group 2: Environmental and Safety Concerns - The re-entry of Starlink satellites poses environmental risks, as each Gen1 satellite generates approximately 30 kilograms of aluminum oxide nanoparticles upon re-entry, which may harm the stratospheric ozone layer [13][16] - A 2.5-kilogram piece of Starlink debris was discovered on a Canadian farm, highlighting the potential for incomplete incineration during re-entry [5][14] - NASA has indicated that the risk of debris falling to Earth increases with the frequency of satellite re-entries, although the overall probability remains low [14] Group 3: Solar Activity Impact - The primary cause of the increased satellite re-entries is attributed to the strong solar activity during Solar Cycle 25, which peaked in 2024-2025, leading to frequent solar flares and coronal mass ejections (CMEs) [9][18] - The CMEs have caused geomagnetic storms that heat and expand the upper atmosphere, increasing drag on low Earth orbit satellites, particularly those below 300 kilometers [11][18]
X @SpaceX
SpaceX· 2025-07-02 07:50
Space Exploration & Launch Performance - Falcon 9 successfully launched 27 Starlink satellites into orbit from Florida [1] - The launch marked the 29th successful launch and landing of an orbital class rocket [1]
Robinhood欧洲落地代币股权业务,CEO:散户也能进入一级市场
3 6 Ke· 2025-07-02 07:50
Core Insights - Robinhood has launched a tokenized stock and ETF service in the EU, allowing eligible users to trade over 200 US stocks and ETFs, including major companies like Nvidia, Microsoft, Apple, and Amazon [1] - The service includes tokenization of private companies like SpaceX and OpenAI, attributed to the EU's more flexible regulatory environment [1] - Robinhood's CEO, Vlad Tenev, views this as a step towards "financial equity," enabling broader access to investments that were previously limited to high-net-worth individuals [3] Group 1: Robinhood's Tokenization Service - The tokenized stocks represent contracts that track the underlying company's stock price and are recorded on the blockchain [1] - Users can only trade these tokens on Robinhood's platform, which acts similarly to an exchange, and transactions are conducted in USD with a 0.10% foreign exchange fee for Euro conversions [2] - The service is regulated under MiFID II, with underlying assets held by licensed US institutions, and Tenev anticipates future SEC oversight for these tokenized stocks [4] Group 2: Market Dynamics and Trends - The trend of private companies remaining unlisted is highlighted, with significant valuations making it difficult for ordinary investors to participate in their growth [3] - The regulatory landscape is evolving, with Chinese brokers like Guotai Junan International obtaining licenses to offer virtual asset trading, indicating a shift in asset allocation strategies [5] - Institutional interest in cryptocurrencies is increasing, with reports showing a net inflow trend for both cryptocurrencies and gold in the near future [5] Group 3: Market Performance - Following the announcement, Robinhood's stock price rose by 12.8%, although it experienced a slight decline of 1.39% the following day, with a market capitalization of $81.48 billion [7] - The stock has seen significant gains, with a 41.5% increase in June and a 34.7% rise in May [7]
X @SpaceX
SpaceX· 2025-07-02 07:33
Deployment of 27 @Starlink satellites confirmed ...
X @SpaceX
SpaceX· 2025-07-02 06:40
Falcon fleet leader touches down for its 29th launch and landing https://t.co/4ypDMyJQTs ...
X @SpaceX
SpaceX· 2025-07-02 06:21
Watch Falcon 9 launch 27 @Starlink satellites to orbit from Florida https://t.co/7FxX8HrZhU ...
“全球独角兽榜”青岛企业占6席
Sou Hu Cai Jing· 2025-07-02 04:37
Group 1 - The core viewpoint of the article highlights the emergence of 10 unicorn companies from Shandong province, with a focus on new industries such as semiconductors, software services, industrial internet, and renewable energy [3][4] - Qingdao has the highest number of unicorns in Shandong, with 6 companies listed, including GoerTek Microelectronics, which has a valuation of 20.5 billion yuan, ranking 395th globally [4] - Other notable companies from Qingdao include Nengchain Group with a valuation of 18.5 billion yuan, and Kaos, Teld, and others, showcasing a diverse range of sectors [4] Group 2 - The Hurun Research Institute identified a total of 1,523 unicorn companies globally, an increase of 70 companies (approximately 5%) from the previous year, with China ranking second with 343 companies [5] - The report indicates that 77% of unicorns are focused on software and services, particularly in fintech, software services, and AI, while 23% are in physical products, mainly in semiconductors, renewable energy, and health technology [5] - SpaceX is noted as the highest-valued unicorn globally, with a valuation increase of 1.2 trillion yuan, reaching 2.6 trillion yuan, while OpenAI has the fastest growth rate for the second consecutive year [5] Group 3 - The 2025 "China's 500 Most Valuable Brands" report lists 22 brands from Qingdao, with 5 entering the top 100, including Haier, Qingdao Beer, and Hisense [6] - Haier leads with a brand value of 573.517 billion yuan, ranking 3rd overall, while Qingdao Beer maintains its position as the top beer brand in China with a value of 280.355 billion yuan [6] - Other brands like Kaos and Double Star Tire also feature prominently, indicating strong brand presence and value in the Qingdao region [6]
X @Tesla Owners Silicon Valley
SpaceX has come a long way https://t.co/XDBCy4oFYr ...
X @Elon Musk
Elon Musk· 2025-07-02 04:17
RT SpaceX (@SpaceX)Falcon 9’s first stage has landed on the Just Read the Instructions droneship https://t.co/y73SiYjNmN ...
马斯克火星梦碎,资本的政治逃避,与科技乌托邦破灭
Sou Hu Cai Jing· 2025-07-02 03:55
Core Viewpoint - Elon Musk has abandoned his political vision of Mars colonization, reducing it to a mere technological experiment, which critiques the capitalist pursuit of space colonization fantasies [1][3]. Group 1: Political and Ideological Implications - Musk's Mars colonization dream was intertwined with political ideals, aiming to create a "libertarian paradise" free from Earth's political and economic constraints [3]. - The failure of this vision highlights the inability of capitalists to escape the complex political and social structures on Earth, revealing deep ideological constraints [3][4]. - The conversation between Musk and DeepMind CEO Demis Hassabis underscores that societal issues and AI regulations will persist regardless of planetary migration [4]. Group 2: Symbolism of Failure - The explosion of SpaceX's Starship in June serves as a tangible symbol of the collapse of this political utopia, representing the clash between ambitious capital-driven dreams and harsh realities [6]. - Musk's resignation from government roles appears to be an attempt to evade political burdens, yet the underlying political dilemmas remain unresolved [6]. Group 3: Broader Reflections on Capitalism - The shattered dream of interstellar escape reveals the dangers of ignoring reality in the blind pursuit of technological utopias, with Mars becoming a new prison controlled by "political correctness" and AI [7]. - The capitalist vision of space colonization is criticized as a facade serving capital interests rather than genuine human progress [7][9]. - The article argues that humanity should focus on addressing terrestrial issues rather than escaping to Mars, emphasizing the need for fairness, justice, and global cooperation for sustainable development [9].