If we're talking about the surface of the Earth (i.e. no clever "In the core" stuff) then... everywhere. And by surface lets say that we're talking about everything from the seafloor to the upper atmosphere.
It would probably be cheaper to put it in the caldera of an active volcano than on the Moon. You could certainly get a bathysphere full of archival tape to the bottom of the Challenger Deep for less than you could get the same on the Moon.
At current prices, I think the moon is about as expensive as getting into Fort Knox by force.
Probably about as survivable, too.
Starship, if they solve the remaining issues before politics catches up with them, could solve the first problem.
I've seen some interesting ideas for contact-free drilling that might help with the second, but for now they're experimental* — we've got a lot of things in space tech that need R&D spending, which is a great opportunity on a forum like Hacker News, but does mean dreamers like me need to wait.
Yes. Meteorites are being systematically collected to get impact statistics in areas that are tectonically undisturbed. They seem equally good places: Antarctica, Atacama desert, Greenland. In terms of bandwidth and maintainance they seem preferable to the moon. See the Arctic Code Vault in Svalbard.
>Lonestar’s CEO Christopher Stott says it is to protect sensitive data from Earthly hazards.
If storing your data into 2 or 3 datacenters spread across the planet isn't safe enough from disaster, it's not clear that the moon will be any better since after a global disaster that destroys all copies of the data, it's likely that there will be no one left on earth that still needs or wants that data.
Middle English: from Old French lunatique, from late Latin lunaticus, from Latin luna ‘moon’ (from the belief that changes of the moon caused intermittent insanity).
oil rig would be perfect, position it over one of the cold currents than make up the global "conveyor belt" heat transport system, and enjoy limitless water @3~4°c to cool any sized data cluster.....position it just right, and the rig can just tap into a natural gas resevoir and use that to power the data cluster, pumps, stuff, whatever, stick some giant wind turbines out there, paint them yellow, make everybody happy
Nope you're wrong. Lonestar has this all figured out. They even have a landing page and dramatic promo video, which is a clear sign of how much due diligence they put in after receiving their oversubscribed $5M seed investment.
> Some parts of the moon are permanently shadowed and therefore extremely cold, as low as -173 °C. This means that no energy or water would need to be expended to cool the data center.
That doesn't sound right to me. If there's no air, then only black body radiation can be used to cool the data center. That means a massive radiator, a lot larger than a heat-to-air radiator+fan used on earth.
There's a serious lack of terraforming here on Earth.
Oh, we're overpopulated? Buy some single-family homes, buy out the government, and upzone it into apartments. You're still cheaper than space flight and with a shorter commute to work than Rapture
This is as big a scam or waste as those solar mirror people. Throwing a USB stick out the lunar rover window and calling it a data center. Data centers usually do stuff other than sit in the dust.
Feel free to invest though, perhaps if you feel good about discarding hard drives on the moon I could interest you in space mirrors and for a low low price I'll lease you the spot where your harddrive lands for 100 years.
> Throwing a USB stick out the lunar rover window and calling it a data center. Data centers usually do stuff other than sit in the dust.
Okay, so here me out: the ultimate cold storage for someone like Iron Mountain. You'd have to understand that you'll need a minimum of 96 hours for retrieval time, and it's gonna be expensive to get that retrieval rocket there and back. Or, build a big dish and send the data via satellite signals.
If you want your data to survive a global nuclear armageddon or Chicxulub impactor, a flash drive on the moon isn't a bad place to put it.
You know what they say, 3-2-1 backup: three copies of your data, stored on two different types of media, with one copy kept offsite to guard against common-cause data loss. Depending on the cause, off-site could be a difficult place to go!
Let's tale it at face value that a hard drive on the moon does not entropy. Let's also take it as given that the data is so important that you would pay millions of dollars to place it on the moon and millions more to get it back when needed in the event that all your other forms of backup failed due to some global catastrophe.
1) At the moment, we can't even get living people off the international space station let alone land on the moon and take off from the same spot twice.
2) If a space based proof of concept was practical, why would we not store our hard drive on the ISS. It is looking for some excuse to remain in operation and we can already come and go from it on a semi-regular basis?
3) If there was a global catastrophe to the extent that only moon based archives remained, then how are we going to go get them? This crisis destroys all data archives but preserves our space program?
4) Once we did get the drive back, what exactly might we do with it considering all other forms of data storage were destroyed?
5) If the data on the drive was so valuable that we were willing to pay millions of dollars for the chance that after Armageddon we could still get it back... Then why would the Chinese not just wait for us to place the drive then go get it themselves? Surely you would never encrypt it as the key would be just as vulnerable to loss as the data.
> 1) At the moment, we can't even get living people off the international space station let alone land on the moon and take off from the same spot twice.
This is absolute garbage. It's not even close to being true. Since the astronauts arrived on the Boeing craft, SpaceX has delivered and retrieved other astronauts. They are not still on the ISS because there's no ability to bring humans back, but because of a scheduling logistics situation.
Continuing to push this scheduling snafu as being unable is just nonsense, and you are as well for pushing it.
> 2) If a space based proof of concept was practical, why would we not store our hard drive on the ISS. It is looking for some excuse to remain in operation and we can already come and go from it on a semi-regular basis?
There's only so much space on the ISS. Also, it's being decommissioned soon, so unless some company wants to take it over as a business--which NASA is open to yet no takers--they've contracted SpaceX to de-orbit the station.
That's because of the incompetence of the manufacturer of the craft used, not humanity's inability to make this happen. So this isn't even close to being a fair comparison.
Are you suggesting that we "simply" build an entire space transit system so people can come and go to the moon on short notice in order to support hard drive archiving?
> They've got it all figured out, you just don't understand.
I'd love to know how they plan to offset the cost of moving every single nut and bolt to the moon with... Cheaper cooling?
I mean, Microsoft experimented with sinking data centers under the ocean. That's certainly cheaper and more performant than shooting a rocket to the moon. That experiment ended. Why?
Iirc a big issue they had was the fact it's nearly impossible to service the interior once you sink it down. That would basically get an order of magnitude worse with it on the dark side of the moon.
I wonder if this info came from the Intuitive Machines or from article editor?
I can't find anything related to cooling on Intuitive Machines website. BTW, the website looks like investor bait, not a real company that has a future.
"Amit Verma, a professor of electrical engineering at Texas A&M University Kingsville who is not affiliated with the project, says there may be technical advantages to hosting data on the moon as well. Some parts of the moon are permanently shadowed and therefore extremely cold, as low as -173 °C. This means that no energy or water would need to be expended to cool the data center. And the electrical components will perform more efficiently."
I'm guessing Verma only thought about the electrical aspects, and simply didn't think about the different atmospheric conditions (i.e. not having one) as that's outside of the conditions an electrical engineer typically deals with. I can see how someone can make such a "oops, didn't think of that" mistake when a journalist asks for a comment.
A 1 meter square heat exchanger in a vacuum at 20C will emit about 1 kilowatt at -173C. So about as much as a small space heater per small panel. So a 1 megawatt datacenter would need about 300,000m^2 or 0.3 km^2 of surface area to cool it.
But geothermal cooling would be great on the moon too. Run a pipe 2 meters under the lunar surface and it is -21C.
I think the whole idea though is to make a low wattage space-stead so you can store copies of Moana out of reach of Disney cease and desist letters.
> But geothermal cooling would be great on the moon too. Run a pipe 2 meters under the lunar surface and it is -21C.
Isn't the moon geologically dead though - no water or geological movements?
I worry this would just result in the ground absorbing the waste heat and eventually becoming too warm to effectively cool anything. Especially because the ground itself would eventually still be limited by the rate of radiative cooling into space, right?
You have to worry about changing the ground temperature even on earth FYI. When designing district heating/cooling systems with borehole fields, one of the things that you check for is to make sure that you don’t inject too much heat (or extract too much) seasonally - ideally it’s roughly balanced so any drift year over year is small.
Obviously things like the diffusivity (so conductivity, mass, density etc) of the ground matter a lot, as does the rate of heat exchange at the surface for it to reject (or absorb) heat to the environment.
Looked up some papers, and seemingly super low compared to what I would have initially guessed - probably because it’s porous/fluffy/sharp dust with lots of small voids/less compacted I’m guessing. Like, orders of magnitude less than the ground on earth. Not my area of expertise though and was just cursorily skimming papers for values. Specific heat cap and density seem like what you would expect for any rocky materials.
Geological activity is usually a problem for geothermal cooling. Conductivity of lunar subsurface is your main problem. Generally what makes geothermal really effective is the monstrous thermal mass of solid and liquid material compared to air as well as it's much higher conductivity. While that is true on Earth, on the Moon things are very different.
The problem isn't so much geological activity or lack thereof, as the nature of lunar regolith. Lunar regolith has a conductivity of 0.004W/mK. That is lower than aerogel! So unless the subsurface has a much higher conductivity, using subsurface cooling would be doomed.
Edit: Lunar Regolith is only the first 4-5 meters of the lunar surface.
Their point is sure, you locally dump the heat. Where does it go then? There's not ground water to act as a sink so you're stuck with basically a big regolith insulator, and there's barely any atmosphere, so you're back to the black body of the ground with extra steps and a large local sink. That sink isn't infinite when you're talking even house scales, much less thermal scales of a large datacenter. Cooling works on earth because the atmosphere moves the heat.
The regolith is 0.004W/m2K. Less than aerogel. Less than an open vacuum! Ouch!
Although the regolith is only 4-5 meters thick, so you could probably just go under it and see what the subsurface is like with regards to conductivity.
> But geothermal cooling would be great on the moon too. Run a pipe 2 meters under the lunar surface and it is -21C.
It won't stay -21C for very long, if you pump heat into it.
Really, radiative cooling is your only longer term option.
Btw, you can make your radiative cooling a lot more efficient than you gave in your example, if you run it at a higher temperature. Radiated power grows with the fourth power of (absolute) temperature. So, run your chips at something closer to eg 100C and you radiate more than 2.5x as much power.
> It won't stay -21C for very long, if you pump heat into it.
You are right, and also it would require digging which is a lot harder than laying out panels on the surface. Back of the napkin it's a tossup depending on the conductivity of lunar sub-surface material and how much pipe you lay. Just like on Earth.
> Btw, you can make your radiative cooling a lot more efficient than you gave in your example
This is true too, heat pumps could even get higher radiator temps than 100C if you like.
Heat pumps are typically 200-400% efficient. That is, they move 2-4x as much heat as they produce to move that heat. Although that is usually radiating energy to a fairly warm atmosphere. If they are pumping into an extremely cold environment you will get insane efficiencies since you are 'going with the flow' with regards to entropy increase.
Putting a data center on the moon is not the real business.
The real business is the fake contracting companies the founders own who will hoover up all the contracts, do a lot of on-paper contracting making the founders very wealthy before the fake lunar business goes bankrupt.
> If there's no air, then only black body radiation can be used to cool the data center.
to put it into numbers - at 80C (353K) 1m2 radiates 880Watts
I think though that instead of the Moon we'll be putting data centers into orbit - for 1KWt GPU we'll need 5m2 solar panels and 1m2 radiator - all together under 10kg, ie. $1000 at Starship prices while the GPU itself is $20K+ .
The kicker here is that the Starship launch price is cheaper than installing solar on the ground ( $2K/KWt and higher)
I'm surprised that, somehow, the article barely even touches upon the question of bandwidth. Terrestrial data centers often have hundreds of gigabits per second of transit - how much bandwidth would be available to this lunar data center, to what endpoint, and how reliable will that be? (Would one of these permanently shadowed areas of the moon even have line-of-sight to the Earth's surface, or would it have to be relayed through a satellite?)
If you have a problem that requires and hour or a day to compute, then spending fifteen minutes for data transfer up and down (particularly in the face of lowered costs) is often a profitable trade. Movie studio render farms are a classic example of such compute jobs. Weather or geological resource prediction could be another. There are many such high-compute jobs in practice.
Not only are those jobs relatively rare, but they also require a lot of hardware and a lot of power. Both of those are going to be in short supply. (Solar power requires sunlight, and the target locations are deliberately in shadow.)
The transit is even worse than that, right? The moon orbits the earth so at different times of day it is over different parts of the earth's surface. So the route is not only constantly changing, but sometimes you have to go around the entire earth (either via satellite relay or fiber) and then cover the distance from the earth to the moon on top of that.
It's hard to imagine any scenario where this proposal really makes sense.
"According to the United Nations’ 1967 outer space treaty, space and the moon are “not subject to national appropriation by claim of sovereignty,” and as such poses a loophole for data sovereignty laws."
That will probably work about as well as the proposal to put a data center on Sealand [1]. Or Cryptoland. Or Satoshi Island. Or Blueseed.[2]
Or the Space Kingdom of Asgardia, which launched a successful satellite with some data storage in 2017.[3] That lasted until 2022, when the satellite re-entered.
It might have a better chance that those ocean-based proposals.
There are a lot of countries with navies that could just happen to decide to conduct a live fire training exercise in the general area as your ocean facility and just happen to have an accident that takes you out, with enough plausible deniability that they probably would not get in any serious trouble over it.
There are a much fewer number of countries that could take out a lunar facility and I don't think any could do it in a way that has any plausible deniability.
> There are a much fewer number of countries that could take out a lunar facility and I don't think any could do it in a way that has any plausible deniability.
Sure, but if the goal is to get around copyright law, i think the usa would be very happy to do it. No plausable deniability needed.
> There are a lot of countries with navies that could just happen to decide to conduct a live fire training exercise in the general area as your ocean facility and just happen to have an accident that takes you out, with enough plausible deniability that they probably would not get in any serious trouble over it.
Why would countries not already do the same thing to commit high seas piracy today?
Whether countries have jurisdiction over the moon or not is irrelevant, because countries do have jurisdiction over the person or corporation that will run the lunar data center.
> [...] because countries do have jurisdiction over the person or corporation that will run the lunar data center.
The people who originally sent the thing up, can give up their access.
As long as you don't have to physically touch the thing again, you can use some clever cryptography, so that no one is technically running it.
That's easiest, if you just let no one have any privileged access. But you can use (public key) cryptography or similar to give some anonymous people on earth access. Or, for peek publicity value, the data centre can give access to whoever holds a specific bitcoin.
You can really trade it as a token on some blockchain, and the data centre itself can read the chain (as long as someone sends it to them, but anyone can do that).
The data centre will do the bidding of whoever has the private key that's associated with that specific token on the blockchain.
But the whole blockchain bit isn't even necessary: some anonymous person on earth can hold the private key. When they want to pass on the rights to the datacentre, they send it a command (signed with their own private key) to obey some other key in the future.
Governments can't figure out who holds the relevant key. (At least not in theory. In practice, they can try to do classic spy craft and meta data analysis etc.)
So even though the owner of the key might sit in Germany or the US or Switzerland, those countries don't know that.
"1967 outer space treaty, space and the moon are “not subject to national appropriation by claim of sovereignty"
because no country on earth can utilize full space venture (yet), do you think this treaty will hold if lets say US decide that they would colonize the moon for a start because no one would be able to do anything
No, I’m saying it’s stupid to put this on the moon. Every time someone says, “just do this” there are complexities and costs that they don’t account for. Where will you get the immense energy needed to melt supercooled ice?! It’s ridiculous that I’m even arguing, it’s such a stupid idea.
> No, I’m saying it’s stupid to put this on the moon.
I agree with that. Just not for the heating/cooling reasons.
> Where will you get the immense energy needed to melt supercooled ice?!
The problem was too much heat. Now it's too little heat. You can't have both. The energy comes from the server farm. The coolant comes from the ice. You melt your first ice with the heat from the server farm (or an initial solar field).
The ice isn’t in one place, it’s spread around in the regolith at varying densities. How do you collect and melt it? Sure you have heat and nothing to do with it but your ice isn’t all in a neat pile. My point is that you can go on and on like this and come up with a thousand ways the project will fail before it’s even started. Anyways, I’m done arguing, we both agree it’s stupid but just for different reasons.
Rock is so well known as a thermal insulator that we build buildings from it (brick, concrete, stone blocks). I don't think it's going to help much with your heat transfer problem.
I read somewhere else that regolith is spiny and porous, and with the leading theory of the moon being that it was the result of some massive object hitting Earth a long time ago, and then the ejected material coalescing in orbit and cooling, it makes sense to me that it would be more of an insulator than a conductor. I only know a bit of materials science from what I learned in nuclear power school back in the day, but for a conductor you want to have, generally, no air voids. I recall learning how bubbles in the steel for the plant could not only lead to failures, but also lead to thermal stress points because heat would build up on the "thinner" cross section of metal when there were pores all over (heat transfer being dependent a lot on the cross sectional width, IIRC). Anyways, it's unlikely they'll actually build anything on the moon anytime soon, especially a "data center".
Why don't they build a datacenter below sea water on earth? There is so much water to cool the system and I bet they can arrange some sort of one directional water flow with no energy expenditure.
Solar panels can provide the electricity for the datacenter.
Those will be installed in the nearest shore (sea water destroys even solar panels)
We can barely tolerate the latency and throughput limitations between Europe and the US for data center processing... and now we're okay with data being wirelessly transmitted (read: super slow) from Earth to the Moon?
Building something on the moon would be cool, but a data center? Unlikely.
$ units
Currency exchange rates from FloatRates (USD base) on 2022-12-14
3753 units, 113 prefixes, 120 nonlinear units
You have: (2 * 238854 mi) / c
You want: ms
* 2564.4291
/ 0.00038995034
Over 2.5 seconds round trip. And just imagine the on-call shifts. "Sorry honey, PDU failed. I'll be back four days after the next-next launch window opens."
Yes! And run there all autonomous ad+slop+BS-generators on one hand , and all the autonomous personal-electric-monks-that-are-to-be-irradiated-with-that on the other hand - with minimal latency and maximal throughput.
> Over 100 countries worldwide have laws that restrict where certain data can be processed and stored, often to within that country itself. As a data center provider, it’s impossible to accommodate all potential customers in any one location, except in outer space. According to the United Nations’ 1967 outer space treaty, space and the moon are “not subject to national appropriation by claim of sovereignty,” and as such poses a loophole for data sovereignty laws. An American satellite is under American law, but it can carry a black box inside it that’s under British law, or any other country’s. A moon-based data center can host as many separate black boxes as needed, to accommodate all of its diverse customers. Governments seem particularly interested in this prospect.
Setting feasibility aside, seems strictly like this is privacy for the entities that deserve it the least. Privacy is for the individual and their "owned" data, not for governments to craft digital black sites.
aside from all the practical arguments listed out in other comments, i simply don't support corporations building in space. space should only be multi-national projects, similar to the way the ISS is managed
I can think of a bunch of great reasons to be wary about this, but at the same time it feels inevitable, doesn't it? Biggest reason I don't like it is the fact a big rock lobbed at earth from the moon is one of the lowest cost of entry WMD programs imaginable.
Seems like it's only a matter of time before someone deploys their capital to another space rock, convinces people to go with them, and then declares sovereignty of that rock. What comes with that is all the same stories history tells over and over, just again, on a different rock.
I'll take your word for it. I lose intuition for how far away the moon is and how much delta - V it takes to get back to earth.
I do think the moon has an advantage from a standpoint that the material is already there. You have to "shoot up hill" to stop the gun from getting loaded.
> “When you place data centers in environments that are already very, very cold...the performance actually also improves significantly,” Verma says. “Because when you go down in temperature, things like electrical resistance also go down.”
Oh, yes yes yes. Until it stops working entirely, that is. Some resistance is part of the design. Ask any LN2 overclocker.
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[ 4.7 ms ] story [ 369 ms ] threadIt would probably be cheaper to put it in the caldera of an active volcano than on the Moon. You could certainly get a bathysphere full of archival tape to the bottom of the Challenger Deep for less than you could get the same on the Moon.
Probably about as survivable, too.
Starship, if they solve the remaining issues before politics catches up with them, could solve the first problem.
I've seen some interesting ideas for contact-free drilling that might help with the second, but for now they're experimental* — we've got a lot of things in space tech that need R&D spending, which is a great opportunity on a forum like Hacker News, but does mean dreamers like me need to wait.
* https://en.wikipedia.org/wiki/Quaise
>Lonestar’s CEO Christopher Stott says it is to protect sensitive data from Earthly hazards.
If storing your data into 2 or 3 datacenters spread across the planet isn't safe enough from disaster, it's not clear that the moon will be any better since after a global disaster that destroys all copies of the data, it's likely that there will be no one left on earth that still needs or wants that data.
Middle English: from Old French lunatique, from late Latin lunaticus, from Latin luna ‘moon’ (from the belief that changes of the moon caused intermittent insanity).
And now the title on HN has been edited down to remove this most exquisite pun :'(
Is the fact that the moon isn't protected from radiation and covered in impact craters not indicative of its poor suitability?
Bury your computers under a few metres of regolith. Gravity on the moon is only a sixth of earth's, so it's relatively easy to pile up or dig down.
That doesn't sound right to me. If there's no air, then only black body radiation can be used to cool the data center. That means a massive radiator, a lot larger than a heat-to-air radiator+fan used on earth.
edit:
https://pmc.ncbi.nlm.nih.gov/articles/PMC9646997/ ("Thermophysical properties of the regolith on the lunar far side revealed by the in situ temperature probing of the Chang’E-4 mission")
Comparing against reference tables, it's more insulating than rock wool insulation,
https://www.engineeringtoolbox.com/thermal-conductivity-d_42...
For all the heroics needed to establish this ok the moon, the efforts and costs are much less back home.
Oh, we're overpopulated? Buy some single-family homes, buy out the government, and upzone it into apartments. You're still cheaper than space flight and with a shorter commute to work than Rapture
1. Put data on the moon
2. ???
3. Profit
For more info, check out their promotional video: https://www.lonestarlunar.com/video
Feel free to invest though, perhaps if you feel good about discarding hard drives on the moon I could interest you in space mirrors and for a low low price I'll lease you the spot where your harddrive lands for 100 years.
Okay, so here me out: the ultimate cold storage for someone like Iron Mountain. You'd have to understand that you'll need a minimum of 96 hours for retrieval time, and it's gonna be expensive to get that retrieval rocket there and back. Or, build a big dish and send the data via satellite signals.
You know what they say, 3-2-1 backup: three copies of your data, stored on two different types of media, with one copy kept offsite to guard against common-cause data loss. Depending on the cause, off-site could be a difficult place to go!
1) At the moment, we can't even get living people off the international space station let alone land on the moon and take off from the same spot twice.
2) If a space based proof of concept was practical, why would we not store our hard drive on the ISS. It is looking for some excuse to remain in operation and we can already come and go from it on a semi-regular basis?
3) If there was a global catastrophe to the extent that only moon based archives remained, then how are we going to go get them? This crisis destroys all data archives but preserves our space program?
4) Once we did get the drive back, what exactly might we do with it considering all other forms of data storage were destroyed?
5) If the data on the drive was so valuable that we were willing to pay millions of dollars for the chance that after Armageddon we could still get it back... Then why would the Chinese not just wait for us to place the drive then go get it themselves? Surely you would never encrypt it as the key would be just as vulnerable to loss as the data.
This is absolute garbage. It's not even close to being true. Since the astronauts arrived on the Boeing craft, SpaceX has delivered and retrieved other astronauts. They are not still on the ISS because there's no ability to bring humans back, but because of a scheduling logistics situation.
Continuing to push this scheduling snafu as being unable is just nonsense, and you are as well for pushing it.
> 2) If a space based proof of concept was practical, why would we not store our hard drive on the ISS. It is looking for some excuse to remain in operation and we can already come and go from it on a semi-regular basis?
There's only so much space on the ISS. Also, it's being decommissioned soon, so unless some company wants to take it over as a business--which NASA is open to yet no takers--they've contracted SpaceX to de-orbit the station.
We can't even get people back from the ISS in 96 days.
I'd love to know how they plan to offset the cost of moving every single nut and bolt to the moon with... Cheaper cooling?
I mean, Microsoft experimented with sinking data centers under the ocean. That's certainly cheaper and more performant than shooting a rocket to the moon. That experiment ended. Why?
I can't find anything related to cooling on Intuitive Machines website. BTW, the website looks like investor bait, not a real company that has a future.
"Amit Verma, a professor of electrical engineering at Texas A&M University Kingsville who is not affiliated with the project, says there may be technical advantages to hosting data on the moon as well. Some parts of the moon are permanently shadowed and therefore extremely cold, as low as -173 °C. This means that no energy or water would need to be expended to cool the data center. And the electrical components will perform more efficiently."
I'm guessing Verma only thought about the electrical aspects, and simply didn't think about the different atmospheric conditions (i.e. not having one) as that's outside of the conditions an electrical engineer typically deals with. I can see how someone can make such a "oops, didn't think of that" mistake when a journalist asks for a comment.
> yes, the files are still here if you need them--well out of reach of pretty much everybody.
But geothermal cooling would be great on the moon too. Run a pipe 2 meters under the lunar surface and it is -21C.
I think the whole idea though is to make a low wattage space-stead so you can store copies of Moana out of reach of Disney cease and desist letters.
Isn't the moon geologically dead though - no water or geological movements?
I worry this would just result in the ground absorbing the waste heat and eventually becoming too warm to effectively cool anything. Especially because the ground itself would eventually still be limited by the rate of radiative cooling into space, right?
Obviously things like the diffusivity (so conductivity, mass, density etc) of the ground matter a lot, as does the rate of heat exchange at the surface for it to reject (or absorb) heat to the environment.
The problem isn't so much geological activity or lack thereof, as the nature of lunar regolith. Lunar regolith has a conductivity of 0.004W/mK. That is lower than aerogel! So unless the subsurface has a much higher conductivity, using subsurface cooling would be doomed.
Edit: Lunar Regolith is only the first 4-5 meters of the lunar surface.
Surely it's selenthermal cooling at that point.
I would expect the regolith to be a poor thermal conductor. Not useful for heat exchanger
But for radiative cooling, vacuum with a clear view of the night sky is orders of magnitude better.
Although the regolith is only 4-5 meters thick, so you could probably just go under it and see what the subsurface is like with regards to conductivity.
It won't stay -21C for very long, if you pump heat into it.
Really, radiative cooling is your only longer term option.
Btw, you can make your radiative cooling a lot more efficient than you gave in your example, if you run it at a higher temperature. Radiated power grows with the fourth power of (absolute) temperature. So, run your chips at something closer to eg 100C and you radiate more than 2.5x as much power.
You are right, and also it would require digging which is a lot harder than laying out panels on the surface. Back of the napkin it's a tossup depending on the conductivity of lunar sub-surface material and how much pipe you lay. Just like on Earth.
> Btw, you can make your radiative cooling a lot more efficient than you gave in your example
This is true too, heat pumps could even get higher radiator temps than 100C if you like.
I'm not sure that actually works out to your advantage, because the heat pumps themselves produce extra heat. But I haven't done the math on that.
The real business is the fake contracting companies the founders own who will hoover up all the contracts, do a lot of on-paper contracting making the founders very wealthy before the fake lunar business goes bankrupt.
It's a startup forum. People commenting here have real world experience with startups. Might they not be commenting on what they see and know?
to put it into numbers - at 80C (353K) 1m2 radiates 880Watts
I think though that instead of the Moon we'll be putting data centers into orbit - for 1KWt GPU we'll need 5m2 solar panels and 1m2 radiator - all together under 10kg, ie. $1000 at Starship prices while the GPU itself is $20K+ .
The kicker here is that the Starship launch price is cheaper than installing solar on the ground ( $2K/KWt and higher)
Like geothermal cooling, kinda. Possibly a passive solution could work somewhat?
It'll be a temporary solution, the regolith will heat up eventually, but maybe it'll work for long enough?
It's hard to imagine any scenario where this proposal really makes sense.
That will probably work about as well as the proposal to put a data center on Sealand [1]. Or Cryptoland. Or Satoshi Island. Or Blueseed.[2]
Or the Space Kingdom of Asgardia, which launched a successful satellite with some data storage in 2017.[3] That lasted until 2022, when the satellite re-entered.
[1] https://en.wikipedia.org/wiki/Principality_of_Sealand
[2] https://en.wikipedia.org/wiki/Blueseed
[3] https://en.wikipedia.org/wiki/Asgardia
There are a lot of countries with navies that could just happen to decide to conduct a live fire training exercise in the general area as your ocean facility and just happen to have an accident that takes you out, with enough plausible deniability that they probably would not get in any serious trouble over it.
There are a much fewer number of countries that could take out a lunar facility and I don't think any could do it in a way that has any plausible deniability.
Sure, but if the goal is to get around copyright law, i think the usa would be very happy to do it. No plausable deniability needed.
Why would countries not already do the same thing to commit high seas piracy today?
The people who originally sent the thing up, can give up their access.
As long as you don't have to physically touch the thing again, you can use some clever cryptography, so that no one is technically running it.
That's easiest, if you just let no one have any privileged access. But you can use (public key) cryptography or similar to give some anonymous people on earth access. Or, for peek publicity value, the data centre can give access to whoever holds a specific bitcoin.
And who will hold the keys?
You can really trade it as a token on some blockchain, and the data centre itself can read the chain (as long as someone sends it to them, but anyone can do that).
The data centre will do the bidding of whoever has the private key that's associated with that specific token on the blockchain.
But the whole blockchain bit isn't even necessary: some anonymous person on earth can hold the private key. When they want to pass on the rights to the datacentre, they send it a command (signed with their own private key) to obey some other key in the future.
Governments can't figure out who holds the relevant key. (At least not in theory. In practice, they can try to do classic spy craft and meta data analysis etc.)
So even though the owner of the key might sit in Germany or the US or Switzerland, those countries don't know that.
because no country on earth can utilize full space venture (yet), do you think this treaty will hold if lets say US decide that they would colonize the moon for a start because no one would be able to do anything
I agree with that. Just not for the heating/cooling reasons.
> Where will you get the immense energy needed to melt supercooled ice?!
The problem was too much heat. Now it's too little heat. You can't have both. The energy comes from the server farm. The coolant comes from the ice. You melt your first ice with the heat from the server farm (or an initial solar field).
I fear however that it's more likely to be a grift
Solar panels can provide the electricity for the datacenter. Those will be installed in the nearest shore (sea water destroys even solar panels)
Building something on the moon would be cool, but a data center? Unlikely.
...or, just, use the moon servers as an extreme form of backups only. Rarely used, used only for the essential data.
And leave us here in peace..
Probably better to just do it in Greenland.
Setting feasibility aside, seems strictly like this is privacy for the entities that deserve it the least. Privacy is for the individual and their "owned" data, not for governments to craft digital black sites.
Seems like it's only a matter of time before someone deploys their capital to another space rock, convinces people to go with them, and then declares sovereignty of that rock. What comes with that is all the same stories history tells over and over, just again, on a different rock.
I do think the moon has an advantage from a standpoint that the material is already there. You have to "shoot up hill" to stop the gun from getting loaded.
Oh, yes yes yes. Until it stops working entirely, that is. Some resistance is part of the design. Ask any LN2 overclocker.