Starcloud is building data centers in space, to address the AI energy need. We recently launched the first H100 to space. White paper at starcloud.com/wp
Joined February 2024
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13 Nov 2025
Thanks @YCombinator for documenting @Starcloud_Inc1’s journey to launching the first @Nvidia H100 in space 🙏 Check it out below! 🎥🤓
13 Nov 2025
Starcloud (@Starcloud_Inc1) recently made history by launching a satellite with an NVIDIA H100 into orbit — the first time a GPU that powerful has ever operated in space. It's the first step toward building AI data centers in orbit, powered by continuous sunlight and cooled by radiating heat into deep space.
Their approach could one day rival the world's biggest data centers while using less energy, zero fresh water, and far lower emissions.
YC's @aaron_epstein visited Starcloud's HQ, where co-founders @philipjohnston, @EzraFeilden, and @Adi_Oltean explained how they built a working prototype in just 15 months — and why big tech is racing to space for AI compute.
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Starcloud retweeted
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Don't spend so much time thinking about how people think about you
We're all going to die
Who gives a fuck
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.@Starcloud_ CEO @PhilipJohnston expects SpaceX to have a "near monopoly on launch" for the next 5–10 years:
"Starship is way ahead of any other program."
"The manufacturing that they're ramping up is insane—like building three Starships per day potentially with their gigafactories."
"The problem with Blue Origin's rocket is, they don't have a reusable upper stage. As I understand, they're not even really trying to build a reusable upper stage."
"The way they talk about pricing is they say, 'We will be as good as the next best price from Falcon 9.'"
"Which, for people who don't know, the next best price from Falcon 9 is like 5x the price of Falcon 9."
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Wow! Over 11,000 @SpaceX employees (more than half) 𝗯𝗼𝘂𝗴𝗵𝘁 into the IPO 😲 I bet no other company in history can say that 👌
SpaceX president @Gwynne_Shotwell reveals over half of all 22,000 employees bought an extra $1,000,000,000 of stock in their own IPO
"We're about 22,000 strong. I'm super proud that over half of us actually bought additional stock in this opening, totalling a billion dollars"
"The thank-you go to all of you for hanging in there, for keeping a straight spine as the doubters doubt, to achieve historic things every day"
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Jun 12
Yoooo… if you like any post with $SPCX in it, the heart turns into a starship…🤣🤩🚀 Try it!
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Jun 12
The question we all wanted to know… will it run DOOM?? 😅
Of course it does! @Starcloud_-1 just ran DOOM and we generated the below video in-orbit.
We ran 2 versions: H100 GPU accelerated, 4k video & original CPU version. The WAD file and additional support files were uplinked from Earth. Nice one @AdiOltean and software team! 💪🚀
Jun 12
Yes, Starcloud-1 runs DOOM on its H100.
Hardest part of running DOOM in orbit wasn't radiation, thermals, or bandwidth. It was resisting the urge to do this on day one.
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Jun 12
We just ran DOOM on Starcloud-1! 😅
Jun 12
Yes, Starcloud-1 runs DOOM on its H100.
Hardest part of running DOOM in orbit wasn't radiation, thermals, or bandwidth. It was resisting the urge to do this on day one.
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Jun 12
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Jun 12
Yes, Starcloud-1 runs DOOM on its H100.
Hardest part of running DOOM in orbit wasn't radiation, thermals, or bandwidth. It was resisting the urge to do this on day one.
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Jun 12
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Jun 11
We call it the Satellite Valley
@b0yle
geekwire.com/2026/spacex-ipo…
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Jun 11
An honor to share the stage with Will Marshall @Will4Planet and John Gedmark @Gedmark at @Founders_Forum for a panel on the convergence of Al, space infrastructure, and planetary-scale intelligence 🤓👌
@Planet, @Astranis, @Starcloud_
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Jun 11
An honor to share the stage with @Will4Planet and @Gedmark at @Founders_Forum for a panel on the convergence of Al, space infrastructure, and planetary-scale intelligence 🤓👌
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Jun 11
The first time I posted this was September 2024… I didn’t think it would still be relevant now 🤦♂️🙄
Jun 10
You know the reason your Stanley or Hydroflask is so good at keeping your water cold is because there's a vacuum inside the walls of the thermos.
Heat can't conduct in a vaccum. And "radiated" heat is ineffective at the temperatures processors operate at.
This satellite will be like plugging in your gaming PC without a CPU cooler. It'll be dead in minutes.
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Jun 11
This is the first time I’ve heard of this Jerry noob but it’s astonishing to me that people can be so confidently wrong. “It will be dead in minutes.” 🤦♂️🤦♂️🤦♂️🤦♂️🤦♂️🤦♂️🤦♂️
Will we get any kind of apology from these people in a year or two? Nope. 🤷♂️ I guess that’s how the world works.
Jun 10
You know the reason your Stanley or Hydroflask is so good at keeping your water cold is because there's a vacuum inside the walls of the thermos.
Heat can't conduct in a vaccum. And "radiated" heat is ineffective at the temperatures processors operate at.
This satellite will be like plugging in your gaming PC without a CPU cooler. It'll be dead in minutes.
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Jun 9
One of the interesting space startups i've been following, Starcloud, just shared their next steps publicly, one detail in particular tells you exactly where this sector is heading
StarCloud 2 Launching in January 2027, and it will be a massive step up, with a 8 kW spacecraft and 100x the power generation of its predecessor. and basically It will feature:
- NVIDIA Blackwell chips and AWS Outpost hardware, allowing customers to run EC2 instances in orbit
- A revolutionary deployable radiator that is 10x lighter and 100x cheaper per watt of dissipation than those on the ISS
- Bitcoin mining ASICs to serve the crypto community
StarCloud has filed with the FCC for a constellation of 88,000 satellites. By utilizing SpaceX’s Starship, they plan to launch 50 spacecraft at a time, each a 3-ton, 200 kW unit, adding 10 megawatts of compute capacity per launch
They’ve already signed a landmark agreement with Crusoe to provide 10 gigawatts of power from orbit starting in the early 2030s
Their target workloads?
- High-value edge processing (like Earth Observation data)
- Massive AI inference tasks, such as code generation and back-office processing, that don't require ultra-low latency
StarCloud isn't just building satellites, they are building "Infrastructure and Energy as a Service" for the space age, and they are definitely one of the most upcoming interesting space startups
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Starcloud retweeted
Jun 9
In Summer 2024, a company called @Starcloud_ was one of the first to come out and say, ‘We’re going to build data centers in space.’
Do you know what people’s reaction was 🤔??
People laughed at them. On the internet people were saying it was the stupidest idea ever.
Nearly 18 months later Google was taking about it and SpaceX was doing it. Now it’s a top topic in every interview.
How it started How it going
Space isn’t just for stars anymore. 🌠
Starcloud’s H100-powered satellite brings sustainable, high-performance computing beyond Earth.
Learn more: nvda.ws/47eYZvC
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Jun 9
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I’ll be speaking about @Starcloud_ and data centers in space at @Founders_Forum on Thursday!
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When I first met @PhilipJohnston during his YC batch, he casually walked me through the spreadsheet model of Starcloud-1 and subsequent missions - from memory.
The details and timelines have probably shifted since then, but not by much - and it still sticks out as one of the most impressive conversations I’ve had.
For those who say I never answer whatever is their particular pet peeve on orbital data centers, this is a particularly dense interview covering a wide range of topics in a short time. Thanks for having me @SpaceNews_Inc to talk about @Starcloud_ and orbital data centers! 🤓
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Jun 9
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I’m speaking on the deep tech stage at London Tech Week @LDNTechWeek in one hour, come by!
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