Google launches Project Suncatcher — AI chips head to orbit

At approximately 2:32 p.m. EDT on 1 October 2026, a SpaceX Falcon 9 rocket carried a fridge-sized prototype satellite into low-Earth orbit for Google's Project Suncatcher, a moonshot programme that envisions scalable AI compute clusters powered by sunlight in space. The spacecraft, built together with Earth-imaging firm Planet, carries four of Google's Trillium-generation Tensor Processing Units and is designed to measure how commercial AI accelerators cope with the vacuum, cosmic radiation and extreme thermal cycling of orbit. Before launch, engineers irradiated test chips with simulated solar protons at a University of California, Davis beamline; the TPUs tolerated more ionising radiation than expected, suggesting a potential five-year orbital lifetime. The mission also trials a novel passive heat-dispersion system, because without airflow, heat produced by compute-dense boards is far harder to shed. Google frames Suncatcher as a feasibility step toward swarms of networked satellites running machine-learning workloads on uninterrupted solar power, potentially easing the ground-side electricity and water demands of Earth-based AI data centres.