“The bottom-cost place to place AI shall be in area, and that shall be true inside two years, perhaps three on the newest,” SpaceX founder Elon Musk advised the World Financial Discussion board in Davos this previous January, as his firm was preparing to go public.
Later that month, SpaceX filed an software with the Federal Communications Fee for an orbital information heart constellation of as much as 1 million satellites in low Earth orbit, 500 to 2,000 kilometers above Earth. And simply three days earlier than the IPO, he mentioned some preliminary design specs for a brand new AI-1 satellite data center in a video interview.
Musk is susceptible to hyperbole in terms of timelines. Full self-driving cars by 2017. First human mission to Mars in 2024. Ten thousand Optimus humanoid robots by the end of 2025. Et cetera. For orbital data centers, which he says shall be an economical various to terrestrial information facilities inside three years, the maths received’t make sense for a number of years, if ever.
Take into account this: There are roughly 14,500 active satellites in orbit. Musk’s Starlink constellation accounts for about two thirds of those. Each the launch cadences and satellite-manufacturing capability must scale up astronomically to deploy one million orbital information heart satellites.
For context, there have been roughly 7,000 orbital launches in all of human history. To loft 1 million satellites into low Earth orbit on SpaceX’s Starship, which is designed to hold as much as 60 satellites per car, would require 16,666 launches solely dedicated to satellite tv for pc deployments. Contemplating that SpaceX launched a document 165 orbital missions in 2025, even at 10 occasions that cadence, it will take a decade. And the way lengthy wouldn’t it take to construct 1 million satellites, given Starlink’s current pace of around 4,000 per year and a beneficiant tenfold enhance in capability? In need of a producing revolution, strive 25 years.
The truth is that the imaginative and prescient of large constellations of orbital information facilities is nowhere near being realized.
As this month’s cowl story, “Why Orbital Data Centers Are So Hard” by Andrew Cavalier of ABI Research, makes clear, the truth is that the imaginative and prescient of large constellations of orbital information facilities is nowhere near being realized.
Dina Genkina, IEEE Spectrum’s computing and {hardware} editor, put the thought into perspective: “Starcloud (a startup that has utilized to the FCC for an 88,000 orbital information heart satellite tv for pc constellation) sent one Nvidia H100 GPU in space so far. Their radiator was too weak to let the chip run at full energy.”
As Cavalier exhibits, cooling even a single Nvidia H100 GPU in area is troublesome: It attracts 700 watts, which would require 1.4 sq. meters of radiator at 60 °C. A 40-kilowatt rack of servers will want an 80-m² radiator; a 100-megawatt information heart would require 2,500 of these radiators. Some astronomers are understandably involved that one million satellites with big radiative wings would blot out the celebs.
So if the economics doesn’t make sense, if the chips are on the mercy of the radiative ravages of area, and if humanity will lose its view of the celebs, to not point out rising the danger of triggering the Kessler syndrome, why are the hyperscalers hyping orbital information facilities?
Genkina supplied the plain reply: candy, candy moolah. “The Elon Musk a part of it’s truthfully genius as a result of he’s acquired xAI constructing the info facilities, SpaceX sending them to area, and Tesla constructing photo voltaic panels,” Genkina says. “It’s virtually like he’s paying himself.”
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