Google's Project Suncatcher satellite returns first AI output from a data-center-class TPU in orbit: onboard Gemma 4 writes a haiku; twin interconnected satellites next in 2027

Why it matters

Google says its Project Suncatcher prototype satellite, launched on Oct 1, 2026 with Planet aboard SpaceX Transporter-18, has completed about three weeks of commissioning and reached a "Hello World" milestone: what Google calls the first AI response from a data-center-class TPU in orbit. During a ground-station pass the team uplinked a prompt to the onboard Gemma 4 open model asking for a haiku about space; the output was downlinked over Svalbard, Norway. The team also ran limerick and telemetry-reporting prompts. Per TechCrunch, the satellite carries four TPUs and up to 1 kW of power, so a TPU can run only about 20 minutes at a time. Next come thermal-stress and radiation tests, with twin interconnected satellites targeted for 2027. Our take: the haiku is trivial, but it is the first end-to-end validation of TPU inference in orbit; Starcloud already ran an H100 in orbit in 2025, so Google's distinction is data-center-class TPUs and its bet on multi-satellite optical interconnect. Radiation error rates, thermal cycling and cost per unit of compute are the metrics that matter, and none have been published yet.