this post was submitted on 16 Jul 2026
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How hard is it to build orbital data centers, actually? (arstechnica.com)
submitted 1 day ago* (last edited 1 day ago) by nullify3112@lemmy.world to c/technology@lemmy.world
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Editor’s note: … In this article, we discuss the technical challenges of building an orbital data center constellation: launching all of it, dissipating heat in space, dealing with radiation, and addressing latency issues in orbit. Read part one here.

I find the napkin math interesting, especially putting into light that given expected longevity of such satellites, 5 to 7 years, they will have to do 10 to 42 launches per day. SpaceX will need $1.5 to $10 trillions to make it happen. All of that so the slop machine doesn’t have to run into obstacles like democracy ? So it can destroy communities and the environment freely? What are we doing?

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[–] Kazumara@discuss.tchncs.de 5 points 5 hours ago

One thing Eric Berger does not go into is bandwidth. There is a hell of a lot more bandwidth available in a single pair of optical fibers on the ground compared to SpaceX' fastest ground to air links.

They claim 1Tb/s for V3 starlink satelites. If that's true, a fiber pair provides at least 20 times that with utterly normal off the shelf DWDM components. And that's a single pair of fibers. Optical cables are often lain with 144 fibers, or 288 fibers.