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xAI joins SpaceX

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961–970 of 1001 posts

Re: xAI joins SpaceX

#961
post #930

The Goalpost shift continues, If elon were working for me, I would have fired him for having never delivered on any of his projects. Hyperloop > Neuralink > Self-Driving Cars > Robotaxi fleets > Personal Robots > Orbital Datacenters > [Insert next]

Shift your goalposts over to Google if your only argument is pointing out projects that dead end and ignoring the ones that don't. So embarrassing.

Google has a PE ratio of 34. Kinda expensive but reasonable in today's climate. Tesla has a PE ratio of almost 400. It's a meme stock at this point.

Re: xAI joins SpaceX

#962
post #45

> it is possible to put 500 to 1000 TW/year of AI satellites into deep space, meaningfully ascend the Kardashev scale and harness a non-trivial percentage of the Sun’s power We currently make around 1 TW of photovoltaic cells per year, globally. The proposal here is to launch that much to space every 9 hours, complete with attached computers, continuously, from the moon. edit: Also, this would capture a very trivial…

We also shouldn't overlook the fact that the proposal entirely glosses over the implication of the alternative benefits we might realize if humanity achieved the incredible engineering and technical capacity necessary to make this version of space AI happen. Think about it. Elon conjures up a vision of the future where we've managed to increase our solar cell manufacturing capacity by two whole orders of magnitude an…

I am no Elon fan but the biggest obstacle to AI is definitely power and then cooling. Space solves both.

Hard to argue with the basic idea here.

Re: xAI joins SpaceX

#963

Earlier quoted context omitted.

I was skeptical at first for much the same reason the author of that first article is; there are a lot of obstacles. But the more I think about it the less daunting those obstacles seem. The author uses the power capacity of the ISS's solar panels as a point of comparison, but SpaceX has already successfully deployed many times that capacity in Starlink satellites[1] without even needing to use Starship, and obviousl…

> The author uses the power capacity of the ISS's solar panels as a point of comparison, but SpaceX has already successfully deployed many times that capacity in Starlink satellites[1] without even needing to use Starship, Your link here isn't really a fair comparison, and also you're still short a factor of 10x. Starlink has deployed 50x the ISS's solar cap across its entire fleet (admittedly 3 years ago); the autho…

> Starlink has deployed 50x the ISS's solar cap across its entire fleet (admittedly 3 years ago); the author's calcs are 500x the ISS for one datacenter.

So 3 years ago they managed to get to 10% of the power budget of one data center by accident, using satellites not explicitly designed for that purpose, using a partially reusable launch platform with 1/10th the payload capacity of Starship. My point is they've already demonstrated they can do this at the scale that's needed.

> A single Starlink satellite is using power in the order of watts

Then why does each satellite have a 6 kW solar array? Re-read that post I linked; the analysis is pretty thorough.

> Don't their current satellites have like 100Gbps capacity max?

Gen 3 is reportedly up to 1 Tbps ground link capacity, for one satellite.[1] There will be thousands.

> Do you have any idea how many 100Gbps routers go into connecting a single datacenter to the WAN? Or to each other (since intrahall model training is table stakes these days).

Intra-satellite connections use the laser links and would not consume any ground link capacity.

You're also ignoring that this is explicitly being pitched as a solution for compute-heavy workloads (AI training and inference) not bandwidth-heavy workloads.

[1]: https://starlink.com/updates/network-update

Re: xAI joins SpaceX

#964

> "The only logical solution therefore is to transport these resource-intensive efforts to a location with vast power and space. I mean, space is called 'space' for a reason. [crying laughing emoji]" This is all the reasoning provided. It is quite sad how a company I admired so much has become embroiled in financial doohickery.

It’s not SpaceX’s fault. It’s still a company to admire, it’s just that nobody appears to be able to stop Musk. I wonder why SpaceX investors aren’t revolting.

Their CEO is revolting.

Re: xAI joins SpaceX

#965

> scaling to make a sentient sun to understand the Universe and extend the light of consciousness to the stars! I didn't realize SpaceX's media press is even cringer than Elon's average tweet...

I quite like the upbeatness. Maybe it won't happen but it makes a change from negativity.

Re: xAI joins SpaceX

#966
post #732

Why not put these AI/PV installations somewhere out in the ocean instead? A tiny fraction of the energy required to ship them there, you can actually physically get there to fix them, can use seawater for cooling, can use existing Starlink for connectivity, etc. Why/how is space more economical than international waters?

I think storms would do them in.

Re: xAI joins SpaceX

#967
Orbital debris is a likely outcome of datacenters in space.

Orbital debris cannot be recovered without permission.

Wireless power beaming burns the atmosphere. If it is n % efficient, then where is the other 100-n % of that energy?

What is the minimum latency to each of the LaGrange points?

We should send humanoid robots to establish human-sized habitats with airlocks for a number of years before risking humans.

-- 2026

Re: xAI joins SpaceX

#968

Earlier quoted context omitted.

We also shouldn't overlook the fact that the proposal entirely glosses over the implication of the alternative benefits we might realize if humanity achieved the incredible engineering and technical capacity necessary to make this version of space AI happen. Think about it. Elon conjures up a vision of the future where we've managed to increase our solar cell manufacturing capacity by two whole orders of magnitude an…

I am no Elon fan but the biggest obstacle to AI is definitely power and then cooling. Space solves both. Hard to argue with the basic idea here.

How does space solve cooling?

It's much more difficult to cool things in space than on earth.

Re: xAI joins SpaceX

#969
post #241

Earlier quoted context omitted.

hmm Tesla shipped millions of cars SpaceX launches 90% of space payloads, Starlink is working well. Thats hard to categorize as never delivered on any of his projects

According to google Tesla has shipped 8 million cars total since inception. It is valued at 1.32 Trillion as of today. Which is roughly $165,000 per shipped vehicle.

I am not arguing Elon is a nice dude or Tesla's valuation is justified. I am saying claim has not delivered on anything is false.
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