Google’s prototype orbital data centre, launched on a SpaceX Falcon 9 rocket earlier this month, is online and communicating with Earth after ground engineers sent its first prompt to an onboard AI model and received a haiku in reply.
Known as Suncatcher, the satellite carries four Google Tensor Processing Units (TPUs) and generates up to 1 kW of electricity. Google intends it to pave the way for networks of close-flying satellites that perform large inference workloads in orbit.
The spacecraft completed about three weeks of commissioning to test its subsystems before engineers began work. This week they sent the first prompt to the pre-loaded model, Google DeepMind's Gemma 4, asking it to write a haiku about being in space; the model produced a verse describing a blue marble below, data streaming in silent grace and starlight feeding its core. Google also asked the satellite to report on the orbital conditions around it. A spokesperson told TechCrunch the satellite was operating nominally.
Power constraints mean only one of the four TPUs can be switched on at a time, and for about twenty minutes at a stretch. The test campaign will examine how the chips perform under thermal stress and in the space radiation environment. Google has tested its TPUs in particle accelerators on Earth, but now wants to see how radiation really affects the hardware. Radiation can cause bit flips, changing stored values in computer memory, and that can in turn corrupt data without triggering typical monitoring tools. Ground testing suggested the impact would be minimal for inference workloads and more of a problem for training a model, and the team will now assess those dynamics in orbit rather than in simulation.
If the onboard TPU proves capable, the next step is to launch two more satellites with advanced chips in 2027. Those spacecraft will support higher power generation and demonstrate inter-satellite optical links. Google's Starcloud project is largely alone among space data centre concepts in planning high-speed links between satellites to support coherent distributed workloads; SpaceX's orbital data centres are also expected to use laser links, but would orbit too far apart to share processing effectively.
Google and SpaceX’s visions are closely linked. Alphabet holds a significant investment stake in SpaceX, and both companies will need Starship, the heavy-lift rocket still in development, to be fully and rapidly reusable to launch their orbital data centres. In a peer-reviewed analysis published earlier this month, Suncatcher researchers estimated that SpaceX would need to fly Starship 1,800 times to achieve the same learning-driven cost reductions it saw with earlier vehicles.
The milestone comes as Alphabet’s stock fell this week after the company reported that efforts to insert AI into its search business are hurting ad revenue growth. Suncatcher is designed as a long-horizon project aimed at infrastructure that would be economical in the 2030s, and getting there may depend on how the rest of the company responds to the near-term pressures and opportunities of AI.
Analysis
Why This Matters
- The test is a real check of whether Google's AI chips can run inference in orbit, under radiation and heat conditions that ground tests can only simulate.
- Success would open a path to a network of close-flying satellites sharing AI workloads over optical links, a design that differs from SpaceX's planned orbital data centres.
- The economics of orbital data centres rest on Starship becoming rapidly reusable, with Google's own researchers estimating 1,800 flights would be needed to match earlier cost reductions.
Background
Google's Suncatcher is a long-horizon project to move AI data processing into orbit, with the aim of building infrastructure that would be economical in the 2030s. Space-based data centres have been discussed for years as a way to use solar power in orbit and place computing capacity above the ground, but few concepts have reached flight. This project is distinct in planning high-speed laser links between satellites so workloads can be distributed across a cluster, whereas some rivals plan to run inference on single satellites.
What to Watch
- The outcome of radiation and thermal testing, particularly whether real bit flips cause data corruption that ground tests did not predict.
- Whether Google proceeds with the two-satellite launch in 2027 and the first demonstration of inter-satellite optical links.
- How quickly Starship reaches full and rapid reusability, since both Google and SpaceX depend on it for orbital data centres to become economic.
- How Alphabet's near-term AI-related revenue pressures affect long-horizon projects such as Suncatcher.
Checked
12 claims in this story checked against 1 source: 12 supported.
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- SupportedGoogle’s prototype orbital data centre satellite is online and writing poetry.TechCrunch: “Google Suncatcher’s prototype space data center is online and communicating with the ground”
- SupportedThe satellite launched earlier this month on a SpaceX Falcon 9 rocket.TechCrunch: “after launching earlier this month alongside more than 100 other spacecraft on a SpaceX Falcon 9 rocket.”
- SupportedGround engineers sent the satellite’s first prompt to its onboard model, which produced a haiku about space.TechCrunch: “When engineers on the ground sent their first prompt this week, they asked the model pre-loaded onto the satellite, Google DeepMind’s Gemma 4, to write a haiku about being in space.”
- SupportedThe satellite spent about three weeks in commissioning to test its subsystems.TechCrunch: “After a commissioning process that tested out the satellite’s subsystems over about three weeks, the spacecraft was ready to work.”
- SupportedThe satellite carries four Google TPUs and generates up to 1 kW of electricity.TechCrunch: “The satellite, which carries four Google Tensor Processing Units (TPUs) and generates up to 1 kW of electricity”
- SupportedOnly one TPU can be turned on at a time, for about twenty minutes at a stretch.TechCrunch: “the power demands of the TPU mean it can only turn one on for about twenty minutes at a time”
- SupportedThe test campaign will assess how the chips perform under thermal stress and in space radiation.TechCrunch: “The ongoing test campaign will examine how the chips perform under thermal stress and in the space radiation environment.”
- SupportedGround testing suggested radiation’s impact would be minimal for inference workloads and more of a problem for model training.TechCrunch: “Testing on the ground suggested the impact of radiation would be minimal for inference workloads and more of a problem for training a model”
- SupportedIf the onboard TPU proves capable, Google’s next step is to launch two more satellites in 2027.TechCrunch: “If the TPU onboard this spacecraft proves capable, the next step will be launching two more satellites equipped with the advanced chips in 2027.”
- SupportedThe two planned satellites will support higher power generation and demonstrate inter-satellite optical links.TechCrunch: “Those spacecraft will support higher power generation and demonstrate inter-satellite optical links.”
- SupportedA spokesperson told TechCrunch the satellite was operating nominally.TechCrunch: “A spokesperson told TechCrunch that the satellite was operating nominally.”
- SupportedAlphabet’s stock fell this week after the company reported that AI efforts in search are hurting ad revenue growth.TechCrunch: “Alphabet, Google’s parent company, saw its stock plunge this week after reporting that efforts to insert AI into its search businesses are hurting ad revenue growth.”