Starfall – Affordable, routine access to microgravity
https://www.spacex.com/starfallWe do education outreach to K-16 learning institutions around the world. There are many things that can be studied in the near absence of gravity. Fluids are a huge area of research (surface tension, sedimentation, etc). We germinate seeds and look for genetic changes, people study brain organoids, artificial retinas, crystals, et al
* (definitely feel free to fill in the seventy volumes of dialogue I left out of this comment in the replies, though)
I read that SpaceX's engines deliver a bit more thrust at a bit less mass than NASA engines. But the kicker was SpaceX's were 1/200th the cost. From the cost angle it's very interesting observing space activities going from mostly public to mostly private.
Did they though? From what I’ve read the places where they build get lots of money and infrastructure (not only DC-related) from them.
Whether it’s A16Z tweeting about how the value of all white collar wages is their market or Anthropic basically saying entry level jobs are done.
https://www.wired.com/story/amazon-says-it-is-going-to-stop-...
https://www.wpr.org/news/microsoft-to-stop-using-ndas-with-l...
https://www.npr.org/2026/08/27/nx-s1-5879528/data-center-nda...
https://www.govtech.com/question-of-the-day/how-many-anti-da...
In seriousness this is an example of the previous point. Rather than engaging with the issue the tech/DC industry seems to think they can wordplay their way out of it by quibbling about irrelevant technical details and people are primed to get extremely angry at grinfucking type behaviour nowadays.
- America. Much harder since the elections. Not appealing.
- Europe. Doesn't have enough electricity with anti-AI, anti-big tech and high tax governments. Not appealing.
- Latin America. Expensive, likely to have your assets appropriated by socialists. Not appealing.
- Africa. No.
- Middle East. Your GPU cluster might get blown up. No.
- China. To some extent yes. Plenty of power and space, pro-AI government, but many companies don't want to send their IP to a country famous for copying it and they're still under GPU sanctions.
- Japan, Korea, etc. Maybe. They're not really famous for big datacenters though.
- Australia, Canada. Possible, but you're exposed to Europe-style political risks.
There just aren't many places on Earth where it's realistic to build and operate AI datacenters once political issues and grid constraints are taken into account.
If you have the technical chops to set up a data center in space — with no connections to the electrical grid or municipal water, you can use your technology to build your data center with the same specs right here on earth in 90% of places that you think are issuing "bans". You'll also get much better cooling for free via convection.
A remote town with a population of 43 will be happy for a data center to employ 2 locals, but data center operators aren't doing that today because they want tax breaks tiny towns can't give, infrastructure tiny towns don't have, nevermind a well-armed police force to deter would-be GPU thieves. Space is a red herring.
Remote towns with populations of 43 are exactly the sorts of places that are pushing back on having datacenters in their areas.
And space is the ultimate physical protection. In reality a bigger issue than GPU thefts are protests or leftist groups trying to firebomb you. See the problems the Tesla factory in Germany has had with leftist violence, like setting its electricity pylons on fire (because electric cars "consume natural resources and are not sustainable", lol). The left has become very anti-AI and so the risk of attacks on facilities, especially if built outside the USA, is quite high which in turn means you have to overbuild physical security like high fences.
Whether they can be worth the money it cost to put them in orbit is another story.
Space datacenters are just SDI2, a convenient bullshit to be able to funnel more money to campaign donors.
As long as there’s space on earth, Space Datacenters can never be economical. It’s rally that simple.
Data centers in brownfields and urban environments see near-zero resistance. There are data centers in skyscrapers in the center of most major U.S. cities, and nobody cares.
Stop plowing down the forests, slurping up the aquifers, and digging up the prairies, and people will stop complaining.
A recent law also gave data centers the last priority for grid access. The idea was to prioritize productive industry over less productive uses of electricity. Even something with as little added value as steel production tends to employ ~10 people (directly or as subcontractors) and produce ~€10 million/year of exports for every MW of average power consumption.
Also pretty sure there will always be empty land somewhere on earth where no one cares. It will always be easier to build and maintain even in a desert than in space.
1. Everything rusts.
2. There is no permanent power source, unlike in sun synchronous orbit where you have 24/7 daylight.
3. The US has no ship building industry of any size.
4. Storms can destroy things.
There is no empty space on Earth unclaimed by governments. Given the results of the American midterms essentially all land is currently controlled by left wing governments, and the left is very anti-AI. Only China really wants to build AI at scale but they don't have enough chips yet. That might change, but even then not many companies want to upload all their IP to China.
So you can forget building more or less any large industrial projects on Earth for the foreseeable future. It may not matter. There appears to be a GPU glut starting anyway, so who knows if anyone will even need new datacenters for a while?
a. put them a few miles outside urban centers
b. put them in space
Which is a cheaper, better option?
From Wikipedia, at 300km the atmosphere is around 80% atomic oxygen https://commons.wikimedia.org/wiki/File:Msis_atmospheric_com...
A new dimension to optimize for, that space is going to incentivize, is highest stable operating temperature.
Higher temperature operation sheds heat energy via radiation much faster.
Some post-silicon substrate research is aimed at wafers that can operate at extremely high temperatures.
I imagine given how often materials research pulls a rabbit out of a hat, there is a lot of head room for temperature.
Isn't this what heat pumps are for? Then you can run the radiators at higher temperatures without needing to run the electronics at those temperatures.
Power and heat radiation are the solved problems at scale in LEO. 50+% of solar energy is attenuated by the atmosphere, so panels can be huge and thin and flimsy in zero-G and get twice as much power as on the ground. Space-Based solar power plants are being actively explored by the US, UK, Chna, and Japan. The real hitch is how to send the power to the ground via microwave without also needing a receiver 20+ km across that lightly crisps birds flying above it.
If the thing that needs the power is in orbit already, all you're doing is sending data, something Starlink already has figured out.
The impractical part is shielding, maintenance, and a modular design that can be remotely maintained from the ground. When you're already running a high-cadence launch schedule, those costs and issues narrow, and you can swap out a component within days.
Again, it makes sense on paper. It might not be more practical than a data center on the ground, but there would be trade-offs.
What’s the practical solution to heat radiation that doesn’t require running your chips at infeasible temperatures?
Even if all the technical issues can be worked out, which I doubt, the incentives are there to pump as many as possible up there. I don’t think we want to live with that raining down on us all.
Historically, there was an issue with dosing pembrolizumab, as the manufacturing process was creating large uneven crystals that required physicians to process at the clinic to ensure proper dosing, but in microgravity? The crystallization is just gorgeous. absolutely beautiful
Take a look at this image, https://issnationallab.org/wp-content/uploads/2024/05/merck_...
Left hand side are the crystals grown on the ground. Right hand side is 0g.
That change made it possible to turn it into a safe injectable that patients could take at home. And they were able to recreate those conditions on Earth, https://issnationallab.org/iss360/merck-lab-publishes-pembro...
https://pmc.ncbi.nlm.nih.gov/articles/PMC6889310/
This is more of a scientist said at a conference to another scientist kind of story, but apparently, they got some seed crystals from the ISS that are now used on Earth.
https://techconnectworld.com/World2025/a.php?i=602
You can do a lot more than make just seed crystals. It turns out that cells in our body are inside of a 3D environment with forces / tension acting in all directions. When you smoosh these in a lab (very literally) and try to observe how a drug behaves in a model cell / model organ, then it doesn't have the same physical constraints acting on it. BUT in 0g that's different. In 0g, cells behave slightly more similarly to how they behave in vivo and that could be a huge difference maker for drug discovery.
One breakthrough drug alone is worth more to humanity than what the ISS has cost across its lifespan.
https://iafastro.directory/iac/paper/id/89939/abstract-pdf/I...
Semiconductors, pharmaceuticals, solar cell crystals, and artificial organs are on the short list. The International space station actually has done some experiments on this premise with promising results
Not in a comforable position I'd say.
FWIW, the main supplier of iPod components in the era of the iPod nano was Samsung, and the main competitor for MP3 Players as well.
The big problem this time is probably that your supplier is the one with the reality-distortion field, not you...
Not that anything is really produced in space either, more like passively transformed into some crystal form from a liquid state or whatever. Environmental assistance more than anything else.
https://www.sciencealert.com/here-s-what-happens-to-spiders-... (with video)
If the automation improves far beyond what we currently have available, maybe this means microchip manufacturing in the future, but we aren't at all there yet from the fab side of the equation.
In the 1960s, they used sounding rockets to do experiments on how molten metals solidify in microgravity, with manufacturing applications in mind.
In the 1970s, they ran experiments, also on sounding rockets, on melting and solidifying materials without letting them touch a container: https://ntrs.nasa.gov/citations/19840059952
More recently, many microgravity experiments have been performed on the International Space Station. Experiments were done on protein crystal growth aboard the ISS in 2000, just a couple of years after it was launched. (I think it took some time to get the experimental facilities up and running.)
Here’s an assortment of links on the subject, starting with a good overview:
https://www.nasa.gov/missions/station/applications-within-re...
https://issnationallab.org/research-and-science/space-resear...
https://www.nasa.gov/missions/station/the-benefits-of-microg...
https://ntrs.nasa.gov/citations/20200001550
https://ntrs.nasa.gov/citations/20150023126
https://asmedigitalcollection.asme.org/manufacturingscience/...
If you manufacture there how do you recover it?
So you tell them where to deliver it (anywhere on the planet that its orbit goes over..), they tell you when it will be arriving, and it reenters and lands there.
Article about a recent test (launched on a Falcon 9):
https://www.afrl.af.mil/News/Article-Display/Article/4629122...
The graphic shows it reentering the atmosphere.
The uppermost parts of the atmosphere are very dynamic, with changes in solar activity causing them to contract and expand on a scale of hours. And this is very significant for the amount of drag felt by re-entering objects. Because of this, if you slowly deorbit something naturally through drag, you are not going to be able to pick the destination, or even know where it ends up until very close to it falling down. So instead you intentionally lower the perigee so that it deorbits in a controlled manner.
Thanks for the correction!
But I remember watching live when they launched a Tesla into Orbit, was it dumb, was it pointless and potentially wasteful? Sure, but that moment seeing humanity once again reach out to the stars I could feel it deep in my bones the space race was starting again.
Sure have lots of problems down here but the eternally yearning of humanity to extend out our hands to grasp the cosmos, to touch heaven is a pursuit I think highly worthwhile.
No need to caveat / apologize for things you admire.
Looks cool and if they could make chips in space, it will be beyond crazy. It will be over time and way over budget but in the end will be insanely profitable.