Topic
Proposals and early hardware for running compute in low-Earth orbit, including constellation filings, solar and radiator sizing, and unproven economics.
Google's first orbital TPU satellite can run its chips for only about 15 minutes before its radiators catch up, Ars Technica reports. Power is the easy part in orbit, so radiator area decides how many chips each satellite can carry.
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Google's orbital compute paper needs Starship to lift 370,000 tons to reach $200-a-kilogram launches, about 180 flights a year for a decade. Its first TPU in orbit will run in 15-minute bursts while Google tests whether a satellite can supply a kilowatt of steady power and keep the chip cool.
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Google's Project Suncatcher is launching four processors that can run Gemini for only 15 minutes before they must shut down to cool. Heat, launch mass and downlink stand between that payload and the orbital data centers SpaceX pitched when it went public in June.
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Blue Origin's first outside raise reached $10 billion at a $140 billion valuation, the Wall Street Journal reported, with Bezos putting in $2 billion. About $8 billion of outside money is pricing a company whose rocket has not flown since a May pad explosion.
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Google launches its first Project Suncatcher satellite on October 1 with four TPUs on about 1kW of solar, roughly one data center server's worth of compute. It can show whether the chips stay cool in orbit, but the laser links any capacity case needs wait for a two-satellite test in 2027.
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Google's MVP satellite takes four TPUs and about 1 kW of solar power into orbit to test whether AI chips survive radiation and shed their own heat. Its results will show whether rebooting away bit flips and cooling through a radiator can carry into the constellations Google has already sketched.
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The orbital compute startup added an extension to its Series A largely to buy launch capacity before Falcon 9 retires in 2028, according to CEO Philip Johnston.
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Google will fly four TPUs on a Planet-built Suncatcher satellite aboard SpaceX's Oct. 1 rideshare and track radiation and heat for a year. Lab tests have already covered launch loads and a five-year radiation dose, so cooling in a real vacuum is the least-proven part of the design.
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Google flies one server's worth of TPUs on 1 kilowatt of solar power on Oct. 1, its first hardware test for orbital AI data centers. The flight tests chip survival and cooling while SpaceX's and Blue Origin's far larger constellations still wait on FCC review.
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The August 20 National Space Transportation Policy sets a 2030 floor of more than 1,000 launches and reentries a year against 181 launches in 2025, and the people who track range capacity put the shortage in payload buildings and site plumbing.
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Amazon walked away from Project Blue after the city council refused it a connection to municipal utilities. The orbital data center plans now sitting with regulators read better as a price tag on permitting delay than as an escape from it.
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Starbase Louisiana turns Starship scaling into a fixed-capex problem. At 30 flights a day the pads cost about $913,000 a launch to amortize; at 1,000 flights a year they cost $10 million.
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The $2.3B valuation sits on 25 people. The binding constraint is manifest space, and Starcloud-3 is designed around a vehicle its founder expects to reach commercially in 2028 or 2029.
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A preprint models the glare from proposed satellite data-center constellations. In the worst case the researchers examined, satellites would outnumber naked-eye stars by a factor of 100.
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Local opposition has hardened into a siting constraint that relocates capacity rather than stopping it. The replacement sites carry worse latency, harder repair access, and pilot-stage scale.
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Bermuda, New Zealand and Australia are tested and online, with nine sites promised by year end. The product being sold is one contract instead of a patchwork of antenna leases.
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The binding constraint on AI capacity is power, water and permits, not silicon. Orbital compute still has to survive the arithmetic: 150kW per satellite against gigawatt-scale ground sites.
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SpaceX, Blue Origin, Google and Starcloud have filings out for well over a million compute satellites. The deadline is a sales pitch; the paperwork is a read on ground power and permitting.
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