Google Is Sending Its AI Chips Into Orbit

By Suad Seferi · 25 September 2026

Google is preparing to send its Tensor Processing Units into space next week as part of Project Suncatcher, an experiment testing whether the hardware used for artificial intelligence can operate reliably in orbit. The company said on September 24 that the first mission will place a prototype satellite into low Earth orbit aboard SpaceX’s upcoming Transporter-18 rideshare mission. The satellite was developed with Planet and will carry Google TPUs to measure how the chips handle launch forces, radiation and extreme temperature changes. Project Suncatcher was first announced in November 2025 as a long-term research effort exploring whether large-scale machine-learning infrastructure could eventually be moved into space. Google’s idea is to use constellations of solar-powered satellites carrying AI chips and linked through high-speed optical connections. The immediate mission is much smaller. Google is first trying to answer a basic engineering question: can its AI hardware survive and continue working under the physical conditions of space? Testing TPUs outside Earth Before the launch, Google tested its Trillium TPUs against some of the stresses they are expected to face. The company said the satellite hardware was subjected to vibration tests designed to simulate a rocket launch, where components can experience forces far greater than normal gravity. Google also tested TPUs using proton beams at the Crocker Nuclear Laboratory at the University of California, Davis, while the chips were running AI workloads. According to Google, those tests indicated that the chips could tolerate a total radiation dose greater than what they would normally encounter during a five-year space mission. The orbital test is intended to show whether those results hold under real conditions. Cooling is another problem. AI chips produce large amounts of heat, but cooling hardware in space is different because there is no air to carry heat away. Google is testing a system based on heat pipes and radiators, which has already been evaluated inside a thermal vacuum chamber designed to reproduce the conditions of space. Why Google is looking at space The longer-term argument behind Project Suncatcher is energy. Google says solar panels in the right orbit can generate significantly more power than comparable panels on Earth and can receive sunlight for much longer periods. That could make space attractive for compute-intensive infrastructure if the technical and economic problems can eventually be solved. The concept would involve groups of satellites carrying multiple TPUs and communicating through laser links. That part remains experimental. Future systems would require extremely high bandwidth between satellites flying in formation, along with precise control of their relative position. Google plans to test this communication architecture in 2027 by placing two satellites in orbit and experimenting with the laser links needed to connect them. The company has not presented Project Suncatcher as a near-term replacement for terrestrial data centres. It remains a research programme, with substantial challenges around cooling, networking, launch costs, reliability and maintenance still unresolved. The upcoming mission is instead intended to establish whether Google’s AI chips can function in orbit at all. If that test succeeds, the next phase will move from individual hardware survival toward the harder problem of connecting multiple satellites into a functioning compute system.