# Google’s space data center satellite Suncatcher sent back a haiku as its first AI response

> Gemma 4, running on the Suncatcher satellite Google launched on Oct. 1, sent back a haiku as its first response. Only one of its four TPUs can run at a time.

- Publisher: JARRUS (@jarrus.tech), thejarrus.com
- Story date: Oct. 30, 2026 (2026-10-30)
- Published: 2026-11-02
- Tags: Google, Data centers and energy, Chips and hardware
- URL: https://thejarrus.com/en/news/google-suncatcher/

### The first response from orbit is a haiku

On Oct. 30, Google announced that it had received the first AI response from its Project Suncatcher prototype satellite. The company calls it a "Hello World" milestone: according to Google, **the first AI response from a data center-class TPU in orbit**. The satellite launched on Oct. 1. Over the following weeks, the team worked through a commissioning checklist, powering up the host and TPU trays and running early machine learning tests. According to TechCrunch, commissioning took about three weeks.

During a ground-station pass, the team uplinked its first prompt to Gemma 4, the open model on board. According to Google's announcement, the prompt read: "Write a haiku from the perspective of a TPU orbiting Earth, with the wonderful world spinning beneath you." The reply was downlinked as the satellite passed over Svalbard, Norway: "Blue marble below, / Data streams in silent grace, / Starlight feeds my core."

The team then tested space-themed limericks and telemetry prompts that report the technical status of the payload systems. Google CEO Sundar Pichai wrote on X that the team had sent a command to orbit, booted up the TPU, run the prompt and received its first complete response.

https://x.com/sundarpichai/status/2116214866444943853

### Four TPUs, one at a time

Google developed the satellite with Planet, which built it, according to TechCrunch. It reached orbit on SpaceX's Transporter-18 rideshare mission, on a Falcon 9 carrying more than 100 other spacecraft. The satellite carries four TPUs, but according to a correction TechCrunch later added to its story, **only one can operate at a time**.

TechCrunch reports that the satellite generates up to 1 kilowatt. Because of the TPU's power demands, a chip can stay on for only about 20 minutes at a time, which further complicates space-to-ground communications. Before launch, Scientific American put that window at 15 minutes. With no airflow in a vacuum, Google cools the chips with a combination of heat pipes and radiators.

### Radiation and heat tests come next

Google will now measure how the TPUs perform under thermal stress and radiation in orbit. Radiation can cause "bit flips" that corrupt data without triggering typical monitoring tools. Google had tested its TPUs with a proton beam at UC Davis's Crocker Nuclear Laboratory while they ran AI workloads. According to the company, its Trillium TPUs survived a total ionizing dose greater than they would receive over a five-year space mission.

According to TechCrunch, ground testing suggested radiation would have minimal impact on inference but could be more of a problem for training models. The team can now check that in orbit. Google has also said the spacecraft faces sustained loads of up to 10 g during launch, with individual chips seeing 50 to 100 g, and that the hardware held up in shake tests.

### The 2027 goal: linked satellites

If the tests go well, the next step is twin interconnected satellites in 2027. According to TechCrunch, they will carry more advanced chips, generate more power and demonstrate inter-satellite optical links. When Google unveiled the project in November 2025, it said it would launch two prototype satellites with Planet by early 2027.

The long-term design calls for clusters of satellites, each carrying dozens of TPUs and linked by lasers. Google's 2025 research paper described an illustrative 81-satellite cluster with a 1-kilometer radius at an altitude of 650 kilometers, in a sun-synchronous orbit with near-constant sunlight. A bench-scale demonstrator reached 800 gigabits per second each way with a single transceiver pair. Google says a solar panel in the right orbit can produce **up to eight times** as much power as one on the ground.

The paper projected that launch costs could fall under $200 per kilogram by the mid-2030s. According to TechCrunch, a peer-reviewed analysis that Suncatcher researchers published in early October includes a related estimate. It found that SpaceX would need to fly Starship 1,800 times to achieve the learning-driven cost reductions it saw with earlier rockets.

### Rivals and doubts

Google isn't the first company to run a language model in orbit. Starcloud, a startup backed by Nvidia, launched its Starcloud-1 satellite carrying an Nvidia H100 GPU in November 2025. According to CNBC, it trained Andrej Karpathy's nanoGPT on the complete works of Shakespeare in orbit and ran Google's open Gemma model. Google's claim is accordingly more specific: the first response from a data center-class TPU.

According to TechCrunch, Suncatcher is largely alone in planning high-speed links between satellites to support coherent distributed workloads. Starcloud and Cowboy Space expect to run inference on individual satellites. SpaceX's data centers are also expected to use laser links, but to orbit too far apart to share processing effectively. Alphabet holds a significant stake in SpaceX, and both companies need a fully and rapidly reusable Starship.

According to Scientific American, the costs of launch, replacing worn-out satellites and returning data to Earth could offset the savings from free solar power. MIT's Kerri Cahoy told the magazine that launching enough mass to generate the power is a huge challenge. Alan George of the University of Pittsburgh sees getting data back to Earth as a major obstacle.

*Cover image generated with AI.*

## Sources

1. [Google: We’ve received our first response from the Project Suncatcher prototype satellite., Oct. 30, 2026](https://blog.google/innovation-and-ai/models-and-research/google-research/project-suncatcher-satellite-response/)
2. [Google (YouTube): Our first response from the Project Suncatcher prototype satellite., Oct. 30, 2026](https://www.youtube.com/watch?v=epqzfAi16us)
3. [Sundar Pichai (X): The Google CEO’s Hello World announcement, Oct. 30, 2026](https://x.com/sundarpichai/status/2116214866444943853)
4. [TechCrunch: Google’s first data center satellite is online and writing poetry, Oct. 30, 2026](https://techcrunch.com/2026/10/30/googles-first-data-center-satellite-is-online-and-writing-poetry/)
5. [Google: Our Project Suncatcher prototype satellite is in orbit., Oct. 1, 2026](https://blog.google/innovation-and-ai/models-and-research/google-research/project-suncatcher-prototype/)
6. [Google (X): Four TPUs and Transporter-18, Oct. 1, 2026](https://x.com/Google/status/2105803583648100611)
7. [Google: Behind Project Suncatcher, our moonshot to put AI in space, Sept. 24, 2026](https://blog.google/innovation-and-ai/models-and-research/google-research/google-project-suncatcher-facts/)
8. [Google Research: Exploring a space-based, scalable AI infrastructure system design, Nov. 4, 2025](https://research.google/blog/exploring-a-space-based-scalable-ai-infrastructure-system-design/)
9. [Scientific American: Google tests its plan for AI data centers in space with Project Suncatcher, Oct. 1, 2026](https://www.scientificamerican.com/article/google-tests-plan-for-ai-data-centers-in-space-project-suncatcher/)
10. [CNBC: ‘Greetings, earthlings’: Nvidia-backed Starcloud trains first AI model in space as orbital data center race heats up, Dec. 10, 2025](https://www.cnbc.com/2025/12/10/nvidia-backed-starcloud-trains-first-ai-model-in-space-orbital-data-centers.html)

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