新智元报道
算力，真的离开地球了！
刚刚，谷歌干了一件相当炸裂的事：把自家的AI芯片送上太空，让它在绕地球飞行的卫星上运行大模型。
然后，地球上的工程师发去一道题。
没想到，太空里的AI回给人类的第一句话，竟然是一首诗！
就在今天，谷歌CEO皮查伊兴奋地宣布，Project Suncatcher项目迎来了历史性的「Hello World」时刻。
这颗10月1日搭乘SpaceX猎鹰9号升空的卫星，装着4颗谷歌TPU芯片，预装了Gemma 4大模型。
经过近一个月调试，工程师终于向卫星发出第一条提示词：请以一块绕地球飞行的TPU的视角，写一首俳句。
当卫星飞越挪威斯瓦尔巴群岛上空，地面收到了三行文字：
Blue marble below
Data streams in silent grace
Starlight feeds my core.
翻译过来，大概是：
蓝色星球在下方，数据静静流淌，星光滋养着我的核心。
不得不说，还挺浪漫。
谷歌官方玩起《E.T.外星人》的梗：我们的TPU刚刚从太空打电话回家了！
马斯克也跑到皮查伊的评论区，只留下一个词：Cool。
毕竟，这颗卫星正是坐着他家的火箭上去的。
但这首小诗背后，藏着一个大得多的野心：当AI越来越耗电，人类开始认真考虑，把未来的超级计算机搬出地球。
程序员学任何一门新语言，第一行代码几乎都是让屏幕打出「hello world」。
这行字本身没啥用处，它只说明一件事：这套东西能跑了。
谷歌这次证明的也是同一件事。
芯片在天上能开机，能接住地面发来的指令，能把一个完整的回答传回来。
10月1日，这颗原型卫星搭SpaceX猎鹰9号上天，同一枚火箭上还挤着100多个航天器。
入轨之后，团队花了大约三周时间给各个子系统挨个上电、做调试。
直到本周，第一条提示词才真正发上去——让星上预装的谷歌开源模型Gemma 4以「身处太空」为题写一首俳句。卫星飞过挪威斯瓦尔巴群岛上空时，这首诗被传回了地面。
写完俳句，工程师又让它写了几首太空主题的打油诗，还让它汇报载荷系统的技术状态。一切正常。
不过，这算不上人类第一次在太空跑大模型。
2025年11月，英伟达投资的初创公司Starcloud就把一块H100送上了轨道，一个月后在天上跑通了Gemma，12月甚至还拿莎士比亚的作品训练了一个小模型nanoGPT。
换句话说，去年谷歌的模型已经在太空，只是用的是英伟达的芯片。
今年，谷歌连芯片都换成了自己的。从模型到芯片，整条链在天上全姓谷歌了。
如果看一眼这颗卫星的配置，你可能会笑出声。
星上一共4块TPU，一次只能开1块。
整颗卫星发电上限约1千瓦，差不多就是你家一台电暖器的功率。受散热限制，TPU每次只能连续工作大约20分钟，然后就得歇着。
地面上的大型AI数据中心，用电按几百兆瓦来算，1兆瓦就是1000千瓦。
这么一比，管这颗卫星叫「太空数据中心」，多少有点像给一间小卖部挂上「宇宙商业中心」的牌子。
但换个角度想：写这首诗用的每一度电，全是卫星在天上自己发的，跟地球的电网没有一根线相连。
这一点，才是真正的重点。
因为地上的电，真的快不够用了。
AI越来越聪明，胃口也越来越大。
模型可以几个月升级一代，变电站却不可能几个月就建好。
今年SpaceX跟Anthropic签算力协议时，公告里写道：训练和运行下一代AI所需的算力，正在超出地面电力、土地和冷却能给的极限。
于是一个看似疯狂的想法浮出水面：既然地球上的电越来越难找，为什么不直接去太阳旁边找？
地球上的太阳能有个毛病——白天发电，晚上休息，天气不好还跟你请假。但在合适的地球轨道上，卫星几乎可以一直沐浴在阳光里。
谷歌研究团队在论文中算过，特定轨道上的太阳能板发电效率最高可达地面同类设备的约8倍。Suncatcher这个名字直译就是「捕捉阳光的人」——
谷歌押的就是这一点。
天上有阳光，但天上也有天上的坎。
最难的有两关。
第一关：热。 很多人觉得太空那么冷，芯片放上去岂不是天然制冷？
恰恰相反。太空接近真空，没有空气帮你带走热量。芯片发出的热只能靠散热板，以辐射的方式慢慢扔出去。
这也是为什么TPU每次只能跑20分钟。不是芯片不行，是热量散不掉。
谷歌工程师说，散热器已经是整颗卫星上最重的部件之一了。
第二关：辐射。 太空里的高能粒子打到芯片上，可能把内存里的0悄悄改成1，专业术语叫「位翻转」。
它的麻烦在于不出声：数据被改坏了，常规监控工具还发现不了。好比有人偷偷改了你账本上的一个数字，账面看起来一切正常。
谷歌在地面粒子加速器里测过TPU，结论是对推理影响小，对训练影响大。
接下来，团队要在真实轨道上验证这些地面结论——实验室模拟毕竟不是真正的宇宙。
过了这两关之后，谷歌想做的事才真正跟别人拉开了距离。
Starcloud、Cowboy Space走的路线是一颗卫星一台机器，各跑各的推理，像在天上开了一串小卖部，每家管自己的货架。
SpaceX也打算用激光链路，但它的卫星彼此离得太远，没法一起分担计算。
谷歌要的完全不一样。
它想让一群卫星贴近编队飞行（间距只有几百米到一公里），卫星之间用激光高速传数据，让它们像机房里一排排机柜一样，合力跑同一个大任务。
这有多难？谷歌自己形容，这好比两颗高速飞行的卫星相隔数公里，双方都在动，还要用光束持续瞄准一枚硬币。
TechCrunch的评价是，在所有太空数据中心的构想里，谷歌几乎是唯一这么规划的。别人在天上摆摊，谷歌想在天上盖超市。
但天花板也高得多。
2027年，谷歌计划再发两颗卫星，正式验证这套星间协同计算。再往后，一切都得等星舰。
谷歌的母公司Alphabet持有SpaceX大量股份，两家的轨道算力计划都押在星舰能做到完全、快速重复使用上。
谷歌自己的研究人员估算过，星舰要飞一千多次，发射成本才能降到位。
谷歌给这件事定的时间表，是2030年代。
人类写给计算机的第一句话是hello world，计算机从天上写给人类的第一句话，是一首诗。
1千瓦的电，20分钟的班，4块芯片一次只上岗1块。离一座能干正经活的太空数据中心，还差得远。
但这首诗用的电全是卫星自己在天上发的，跟地球的电网没有一根线相连。
算力的边界，从这里开始往外挪了。
皮查伊管这一步叫hello world。
下一个hello world，可能就是整个机房在天上开机。
编辑：所罗门
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本文由 AI图鉴自动抓取并翻译，版权归原作者所有；如需查看原文请点下方链接。
New Ji-won.
You really left Earth!
Just now, Google has done quite a blow-up: sending its own AI chip into space to run LLM on satellites orbiting the Earth.
Then the engineers on Earth sent out a question.
I didn't know that the first word from AI in space to mankind was a poem!
And just today, Google CEO Pichai is excited to announce that Project Sunchacher has a historic "Hello World" moment.
The satellite, which was launched on 1 October by SpaceX Falcon 9, was equipped with four Google TPU chips pre-positioned with Gemma 4LLM.
After nearly a month of debugging, the engineer finally sent the first prompt to the satellite: please write a sentence from the perspective of a TPU flying around the Earth.
When the satellite flew over the Norwegian Svalbard Islands, the ground received three lines of text:
Blue marble below
Data streams in silent grace
Starlight feeds my core.
Translation, probably:
The blue planet is below, the data is still flowing, and the stars feed my core.
I have to say, it's kind of romantic.
Google officially played E.T. Aliens: Our TPU just called home from space!
Mask also went to Pichai's comment area, leaving only one word: Cool.
After all, the satellite was on his home rocket.
But behind this little poem is a much larger ambition: as AI becomes more and more power-consuming, humans begin to think seriously about moving future supercomputers out of the world.
The programmer learns any new language, and the first line of code almost always gives the screen a "hello world".
It doesn't mean much in itself. It just means one thing: this thing can run.
Google proved the same thing this time.
The chip is open in the sky, can catch instructions from the ground and can send a complete answer back.
On 1 October, the prototype satellite was launched on SpaceX Falcon 9, and over 100 spacecraft were squeezed on the same rocket.
After being put on track, the team spent about three weeks getting electricity and debugging the subsystems.
It was not until this week that the first prompt was actually sent — so that Gemma 4 of the pre-set Google Open Source Model on the Star would write a quote with the title “Being in space”. When the satellite flew over the Norwegian Svalbard Islands, the poem was passed back to the ground.
After writing the sentence, the engineer allowed it to write a few oil poems on space themes and to report on the technical state of the payload system. Everything's fine.
But this is not the first time humans have run LLM in space.
In November 2025, Starclaud, the start-up company of Ingweida's investment, put a piece of H100 on track, ran through Gemma a month later, and in December even trained a small model of nanoGPT with Shakespeare's work.
In other words, last year's Google model was already in space, with the British chip.
This year, Google changed its chips. From model to chip, the whole chain is all Google.
If you look at the configuration of this satellite, you might laugh.
There's four TPUs on the star, one at a time.
The entire satellite has a power ceiling of about 1,000 watts, almost the power of a heater in your house. TPU can only work for approximately 20 consecutive minutes at a time and then rest.
The large AI data centre on the ground, calculated by electricity at hundreds of MW, is 1,000 MW.
By comparison, it's called the Space Data Centre, which is sort of like putting a label on a commissary called the "Cosmic Business Center."
But a different angle: every single piece of electricity used to write this poem was sent by satellite on its own in the sky, and there was no wire to the Earth's grid.
That is the real focus.
The power on the ground is really running out.
AI is getting smarter and more appetite.
Models can be upgraded in a few months, and transformers cannot be built in months.
This year, when SpaceX and Anthropic signed a calculator agreement, the bulletin states that the calculus needed to train and run the next generation of AI is beyond the limits of ground power, land and cooling.
So a seemingly crazy idea came out of the water: since electricity on Earth is getting harder to find, why not just go to the sun?
There's a problem with solar energy on Earth -- power generation in the day, rest at night, and you're on leave in bad weather. But in the right Earth orbit, satellites can almost always bathe in sunlight.
Google research teams have calculated in their thesis that solar panels in a given orbit can produce more than eight times as efficiently as equipment of the same kind on the ground. The name Suncacher is "the person who captures the sun."
That's what Google says.
There's sunshine in the sky, but there's the sky.
The hardest part is two.
First level: Hot. A lot of people think space is so cold, isn't it natural to put chips on it?
On the contrary. Space close to vacuum, no air to take your heat. The heat from the chips can be thrown out slowly, in a radioactive manner, only on the radiator plate.
That's why TPU can only run for 20 minutes at a time. It's not the chip. It's the heat.
Google engineers said the radiator was already one of the most heavy parts on the entire satellite.
Second level: Radiation. High-energy particles in space hit the chip, perhaps quietly changing the memory from zero to one, with the specialized term "bit flip."
Its trouble is that it's silent: the data has been tampered with and conventional surveillance tools have not been found. It's like someone stole a number from your books, and everything looks normal.
Google measured TPU in the ground particle accelerator and concluded that it had a low impact on reasoning and a high impact on training.
And then the team's going to check these ground conclusions in real orbit -- laboratory simulations are not the real universe.
After these two levels, what Google wants to do is really distanced from others.
Starcloud and Cowboy Space follow a satellite-based machine that runs its own reasoning, like a series of commissaries opened up in the sky, each running its own shelf.
SpaceX also intended to use a laser link, but its satellite was too far away from each other to share the calculations.
Google wants something completely different.
It wanted a group of satellites to fly in formation (between a few hundred metres and one kilometre) and to pass data between satellites at high speed with lasers, so that they could run together on the same big mission as a platoon cabinet in the room.
How hard is that? Google itself described it as a few kilometres apart from two high-speed satellites, with both sides moving and continuously aiming at a coin with beam.
TechCrunch's assessment is that Google is almost the only one that is planned for all space data centres. People in the sky, Google wants to build a supermarket.
But the ceiling is much higher.
In 2027, Google plans to send out two more satellites to officially validate interplanetary co-counting. Later, everything will wait for the ship.
Google's parent company, Alphabet, holds a large share of SpaceX, and both have orbital mechanics plans that can be fully and rapidly reused.
Google's own researchers have estimated that the launch costs cannot be reduced until the ship flies more than 1,000 times.
Google's timetable for this is the 1930s.
The first word that humans write to computers is hello world, and the first word that computers write to humans from heaven is a poem.
One kilowatt of electricity, 20-minute shifts, four chips at a time, only one block. It's a long way from a decent space data centre.
But all the electricity used in this poem is from the moon itself, which is not connected to the Earth's grid.
The calculus boundary has moved from here.
Pichay called this move hello world.
The next hello world, probably the whole room is on the air.
Editor: Solomon
I don't like it.
Auto-fetched and translated by AI Atlas. All rights belong to the original author.