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Starship V3

spacex.com

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Re: Starship V3

#311

[flagged]

I'm basically assuming that "space-based data centers" are some Glomar Explorer-style cover for something else.

Maybe coverage is directed outward from Earth ? It could be quite an upgrade to the "UFO" TV series SID (Space Intruder Detector).

Re: Starship V3

#312

Earlier quoted context omitted.

Yes, beyond the three things that are the hard parts it's easy.

As problems go, radiation and cooling seem to have relatively low dimensionality compared to the other problems. It seems to be mostly a question of optimizing within the dimensions of dissipation / structure / deployment / service / cost / weight. When all is said and done, the cooling solution will end up being a module that can deal with some power dissipation, cost X amount, weight Y amount, have structural inter…

Radiators are raised because it's a known constraint and we know that Stefan Boltzmann implies a lot of radiator mass to be launched even at 100% cooling efficiency and there are also theoretical limits to launch efficiency which Starship is rapidly approaching.

Nobody is saying orbital datacentres can't be cooled, they're saying people arguing launching the mass of the required radiators into space is a better, more cost-effective cooling solution than pumping local water because "space is cold" are talking nonsense. Potential solutions don't look like trying to get 5000 engineers to invent radiators which defy the laws of physics, they probably look like amortising the costs over multiple decades of operation and ideally assembling the radiator portion of the datacentre from mass that's already in orbit, but that's not a near term profit pitch....

Re: Starship V3

#313

He again mentions data center in space. He has to be the biggest richest idiot on the planet. It should be a lot cheaper to just buy massive solar (wait, couldn't he just make them himself with his tesla roofs?) and batteries (which Tesla also makes) and put Datacenter in some dessert and put fiber to that place... But it seems he needs some angle to push all this necessary investment into something? Are we now in th…

Nobody seem to care about reality anymore or facts. You may as well put a data center at the bottom of the ocean which would be way easier but no one is doing that either. In the end in like 10-15 years when others land on the moon and build amazing new things maybe just maybe there will be a realization that playing scifi doesn't produce results.

Microsoft did that already and they canceled this 'idea' because it was too hard to maintain that setup XD

Re: Starship V3

#314
post #171

Earlier quoted context omitted.

One of the underrated topics about space right now is the potential supply of rockets outstrips demand by a lot. We're simply out things we can profitably send to space so SpaceX and others are trying to come up with ideas to induce demand. My understanding is that Starlink mostly grew out of the same need to justify scaling up rocket production.

I don't know why space marines aren't a thing yet. The USA could put a rapid reaction force of Tier 1 Special Forces onto a space station and deploy them through atmospheric re-entry anywhere on Earth within 30 minutes. I can only assume "too easy to track" is part of the logic. Ditto for kinetic strikes. That was super hyped up.

> Ditto for kinetic strikes. That was super hyped up.

Dropping steel rods from orbit didn't seem so crazy. But I've never seen a detailed evaluation of the idea.

Re: Starship V3

#315

He again mentions data center in space. He has to be the biggest richest idiot on the planet. It should be a lot cheaper to just buy massive solar (wait, couldn't he just make them himself with his tesla roofs?) and batteries (which Tesla also makes) and put Datacenter in some dessert and put fiber to that place... But it seems he needs some angle to push all this necessary investment into something? Are we now in th…

Data centers in space make sense if it is military AI controlling drone swarms over Starlink during global conflict.

Re: Starship V3

#316

He again mentions data center in space. He has to be the biggest richest idiot on the planet. It should be a lot cheaper to just buy massive solar (wait, couldn't he just make them himself with his tesla roofs?) and batteries (which Tesla also makes) and put Datacenter in some dessert and put fiber to that place... But it seems he needs some angle to push all this necessary investment into something? Are we now in th…

I dunno if it's that clear cut. In space with a shadowless orbit you get 5x more solar energy per day than the sunniest place on earth. And it's always on, so you don't need batteries. Also, the lack of gravity and weather means that the structures can be a lot more brittle - I imagine something like a gpu on the back of a large thin film solar panel, where the panel also acts as heatsink. Could be pretty cheap!

Re: Starship V3

#317

Earlier quoted context omitted.

Yes, beyond the three things that are the hard parts it's easy.

As problems go, radiation and cooling seem to have relatively low dimensionality compared to the other problems. It seems to be mostly a question of optimizing within the dimensions of dissipation / structure / deployment / service / cost / weight. When all is said and done, the cooling solution will end up being a module that can deal with some power dissipation, cost X amount, weight Y amount, have structural inter…

Isn't the question more an economic one: Is it cheaper to put some solar cells into the desert and to buy some batteries, or to launch things into space (plus the premium for radiation hardening and ensuring it survives long enough because you cannot service it).

Given the current trajectory of battery and solar prices I just don't that space-based systems are cheaper in any way.

Of course there is a long-term aspect should we climb the ladder in the Kardashev scale: Once we used all solar radiation reaching earth we must move to space to grow. But that is decades if not centuries away.

Re: Starship V3

#318

[flagged]

Beyond aggressively optimistic timelines, I find it difficult to disagree with the premise. The aggressively optimistic timelines is also what makes it feasible to even attempt these things, where e.g. the amount of iteration required for Starship would have broken most other companies. > In the long term, space-based AI is obviously the only way to scale. In the long term - all mass and energy available is outside o…

> In the long term - all mass and energy available is outside of Earth - what is here is not even a rounding error.

Define “long term”. Nuclear energy is practically unlimited, plus fusion (if it ever works).

Re: Starship V3

#319
post #156

Earlier quoted context omitted.

I'm basically assuming that "space-based data centers" are some Glomar Explorer-style cover for something else.

The more straightforward explanation is that it's a story that Elon (probably correctly) thinks will sound good to wall-street and enable him to take a ton of the publics money when SpaceX IPOs and gets added to the S&P for himself. In other words good old fashioned plausibly deniable securities fraud.

As an investment narrative it was ideal to justify rolling Elon's unprofitable second tier AI company and the debt-ridden mess he made of Twitter into his highly successful space company, ensuring the investors in those get paid off by the SpaceX IPO...

Re: Starship V3

#320

Earlier quoted context omitted.

Beyond aggressively optimistic timelines, I find it difficult to disagree with the premise. The aggressively optimistic timelines is also what makes it feasible to even attempt these things, where e.g. the amount of iteration required for Starship would have broken most other companies. > In the long term, space-based AI is obviously the only way to scale. In the long term - all mass and energy available is outside o…

Just go to Google Maps. Just do it. Type in Arizona, or new mexico, texas whatever. Do you see all this brownish stuff? Yeah thats just empty land with A LOT of solar. So in the long term, what do you think is cheaper and easier to maintain, upgrade, handle etc.? A Space operation on which you need to send compute hardware constantly upwoards or a fiber connection to some more 'remote/dessert' like area which has a l…

> Just go to Google Maps. Just do it. Type in Arizona, or new mexico, texas whatever. Do you see all this brownish stuff? Yeah thats just empty land with A LOT of solar.

'Brownish stuff', known more generally as natural ecosystems.

> So in the long term, what do you think is cheaper and easier to maintain, upgrade, handle etc.?

How long a term does your imagination stretch to? Are you really arguing that once provisioning, cooling, automated scaling in space, and off-planet mining are all solved problems, that shitting on our planet will still be the cheapest most maintainable option?

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