Google is launching its first experimental satellite for Project Suncatcher on October 1. The mission aims to test whether AI computing infrastructure can function in orbit. The spacecraft, roughly the size of a refrigerator, will carry four Google Tensor Processing Units to run Gemini workloads.
The hardware will launch aboard a SpaceX Falcon 9 rocket as part of the Transporter-18 mission. Google collaborated with Planet to integrate its AI chips into an existing satellite, accelerating the original testing timeline. This prototype is powered by solar panels expected to generate approximately one kilowatt of electricity.
Engineers have addressed thermal management by installing heat pipes and radiators to dissipate heat in the vacuum of space. Due to cooling limitations, the system is designed to run Gemini workloads for 15-minute intervals before requiring a cooldown period. The chips have previously undergone vibration and radiation testing to withstand launch forces and space conditions.
Project Suncatcher, initially announced in November 2025, explores the feasibility of solar-powered satellite constellations for large-scale orbital computing. Google plans to launch two additional prototype satellites in early 2027. The initiative competes with SpaceX, which has also proposed orbital AI data centers with significantly higher compute capacities.
