xAI 加入 SpaceX，加速人类未来
SpaceX 已收购 xAI，从而在地球之上（以及地球之外）打造出最具雄心、垂直整合程度最高的创新引擎，涵盖 AI、火箭、太空互联网、直连移动设备通信，以及全球首屈一指的实时信息和言论自由平台。这不仅是 SpaceX 与 xAI 使命的下一篇章，而是下一本书：规模化打造一颗有感知的太阳，以理解宇宙，并将意识之光延伸至群星！
当前 AI 的进步依赖于大型地面数据中心，而这些设施需要巨量的电力和冷却。即便在近期，全球 AI 电力需求也根本无法通过地面方案满足，除非让社区和环境承受沉重代价。
从长远来看，太空 AI 显然是唯一可规模化的路径。哪怕只利用太阳能量的一百万分之一，所需能量也将超过我们文明当前用量的 100 万倍以上！
因此，唯一合乎逻辑的解决方案，就是把这些资源密集型的工作转移到拥有巨大能源和空间的地方。我的意思是，太空之所以叫“space”，是有原因的。😂
通过直接利用几乎恒定的太阳能，且运行和维护成本极低，这些卫星将彻底改变我们扩展算力的能力。太空中永远都是晴天！发射由一百万颗卫星组成的星座，作为轨道数据中心运行，是迈向卡尔达肖夫II级文明的第一步——这种文明能够利用太阳的全部能量，同时为当今数十亿人支持AI驱动的应用，并确保人类的多行星未来。
轨道数据中心
在航天史上，从未有过任何运载工具能够发射太空数据中心、月球永久基地或火星城市所需的数百万吨级质量。即便在2025年——按轨道发射次数计算是历史上最 prolific 的一年——也只有约3000吨有效载荷被送入轨道，其中主要是由我们的Falcon火箭搭载的Starlink卫星。
将数千颗卫星送入轨道的需求成为Falcon计划的驱动力，推动递归式改进，以达到使太空互联网成为现实所必需的前所未有的飞行频率。今年，Starship将开始把更强大的V3 Starlink卫星送入轨道，每次发射为星座增加的容量是当前Falcon发射V2 Starlink卫星的20倍以上。Starship还将发射下一代直连手机卫星，将为地球各地提供完整的蜂窝网络覆盖。
虽然发射这些卫星的需求将起到类似的推动作用，驱动 Starship 的改进和发射频率的提升，但天基数据中心所需的卫星数量之庞大，将把 Starship 推向更高的高度。凭借每小时一次、每次运载 200 吨的发射能力，Starship 每年将把数百万吨载荷送入轨道及更远的地方，开启一个令人振奋的未来——人类将在群星之间探索前行。
基本的算术是：每年发射 100 万吨卫星，每吨产生 100 kW 算力，每年将新增 100 吉瓦的 AI 算力容量，且无需持续运营或维护。最终，存在一条从地球每年发射 1 TW 的路径。
我的估计是，在 2 到 3 年内，生成 AI 算力成本最低的方式将是在太空。仅凭这一成本效率，就能让创新型企业以前所未有的速度和规模推进 AI 模型训练和数据处理，加速我们在物理理解和技术发明上的突破，造福人类。
这个新星座将建立在成熟的太空可持续性设计与运营策略之上，包括寿命终止处置，这些策略已在 SpaceX 现有宽带卫星系统中得到成功验证。
虽然从地球发射 AI 卫星是当前的重点，但 Starship 的能力也将使其能够在其他星球上开展作业。得益于在轨推进剂转移等进步，Starship 将能够把大量货物送上月球。一旦抵达那里，就有可能建立永久存在，用于科学研究和制造活动。
月球上的工厂可以利用月球资源来制造卫星，并将其部署到更远的太空。通过使用电磁质量驱动器以及月球制造，有可能每年向深空部署 500 到 1000 TW 的 AI 卫星，从而有意义地提升卡尔达肖夫指数，并利用太阳能量中一个不可忽视的比例。
通过让太空数据中心成为现实，我们所解锁的能力将为月球上自我生长的基地、火星上的整个文明，以及最终向宇宙的扩张提供资金并使其成为可能。
感谢你为意识光锥所做的一切，以及你将要做的一切。
Ad Astra！
Elon
xAI joins SpaceX to Accelerate Humanity’s Future
SpaceX has acquired xAI to form the most ambitious, vertically-integrated innovation engine on (and off) Earth, with AI, rockets, space-based internet, direct-to-mobile device communications and the world’s foremost real-time information and free speech platform. This marks not just the next chapter, but the next book in SpaceX and xAI's mission: scaling to make a sentient sun to understand the Universe and extend the light of consciousness to the stars!
Current advances in AI are dependent on large terrestrial data centers, which require immense amounts of power and cooling. Global electricity demand for AI simply cannot be met with terrestrial solutions, even in the near term, without imposing hardship on communities and the environment.
In the long term, space-based AI is obviously the only way to scale. To harness even a millionth of our Sun’s energy would require over a million times more energy than our civilization currently uses!
The only logical solution therefore is to transport these resource-intensive efforts to a location with vast power and space. I mean, space is called “space” for a reason. 😂
By directly harnessing near-constant solar power with little operating or maintenance costs, these satellites will transform our ability to scale compute. It’s always sunny in space! Launching a constellation of a million satellites that operate as orbital data centers is a first step towards becoming a Kardashev II-level civilization, one that can harness the Sun’s full power, while supporting AI-driven applications for billions of people today and ensuring humanity’s multi-planetary future.
Orbital Data Centers
In the history of spaceflight, there has never been a vehicle capable of launching the megatons of mass that space-based data centers or permanent bases on the Moon and cities on Mars require. Even in 2025, the most prolific year in history in terms of the number of orbital launches, only about 3000 tons of payload was launched into orbit, primarily consisting of Starlink satellites carried by our Falcon rocket.
The requirement to launch thousands of satellites to orbit became a forcing function for the Falcon program, driving recursive improvements to reach the unprecedented flight rates necessary to make space-based internet a reality. This year, Starship will begin delivering the much more powerful V3 Starlink satellites to orbit, with each launch adding more than 20 times the capacity to the constellation as the current Falcon launches of the V2 Starlink satellites. Starship will also launch the next generation of direct-to-mobile satellites, which will deliver full cellular coverage everywhere on Earth.
While the need to launch these satellites will act as a similar forcing function to drive Starship improvements and launch rates, the sheer number of satellites that will be needed for space-based data centers will push Starship to even greater heights. With launches every hour carrying 200 tons per flight, Starship will deliver millions of tons to orbit and beyond per year, enabling an exciting future where humanity is out exploring amongst the stars.
The basic math is that launching a million tons per year of satellites generating 100 kW of compute power per ton would add 100 gigawatts of AI compute capacity annually, with no ongoing operational or maintenance needs. Ultimately, there is a path to launching 1 TW/year from Earth.
My estimate is that within 2 to 3 years, the lowest cost way to generate AI compute will be in space. This cost-efficiency alone will enable innovative companies to forge ahead in training their AI models and processing data at unprecedented speeds and scales, accelerating breakthroughs in our understanding of physics and invention of technologies to benefit humanity.
This new constellation will build upon the well-established space sustainability design and operational strategies, including end-of-life disposal, that have proven successful for SpaceX’s existing broadband satellite systems.
While launching AI satellites from Earth is the immediate focus, Starship’s capabilities will also enable operations on other worlds. Thanks to advancements like in-space propellant transfer, Starship will be capable of landing massive amounts of cargo on the Moon. Once there, it will be possible to establish a permanent presence for scientific and manufacturing pursuits. Factories on the Moon can take advantage of lunar resources to manufacture satellites and deploy them further into space. By using an electromagnetic mass driver and lunar manufacturing, it is possible to put 500 to 1000 TW/year of AI satellites into deep space, meaningfully ascend the Kardashev scale and harness a non-trivial percentage of the Sun’s power.
The capabilities we unlock by making space-based data centers a reality will fund and enable self-growing bases on the Moon, an entire civilization on Mars and ultimately expansion to the Universe.
Thank you for everything you have done and will do for the light cone of consciousness.
Ad Astra!
Elon