Google launches prototype satellite for Project Suncatcher to test AI chips in space

The project aims to explore using solar power in orbit to run AI chips, with Google noting that solar cell productivity in the right orbit can be up to eight times higher than on Earth due to near-continuous sunlight. Google states it has tested cooling technology for the TPU in thermal vacuum chambers on the ground and plans to reflect those results in future orbital designs. Inter-satellite optical communication using lasers is planned for testing with two satellites in 2027.

Google emphasizes that this phase is focused on environmental testing and data collection, not on establishing a working space-based AI computing system. The company has not announced that multiple satellites are sharing AI workloads or that high-speed inter-satellite communication has been successful in orbit. The research remains exploratory, with no confirmation of commercial application, service fees, or release dates for users.