Google Plans First Orbital Test of AI Chips

Google plans to send a prototype satellite carrying its Tensor Processing Units into low Earth orbit on a SpaceX Transporter-18 rideshare mission, beginning the first in-orbit test of Project Suncatcher. The test is intended to gather data on how the chips and their cooling system perform in space, not to demonstrate an operational orbital data center. Google says the mission will assess the hardware’s response to launch forces, radiation and extreme temperatures. It will also test a thermal-management design using heat pipes and radiators to move heat away from the processors. Conventional airflow cooling is not possible in the vacuum of space, making heat removal a central engineering challenge. The mission’s timing and configuration are not fully consistent across reports. Google’s plan was described as a launch the following week, while one report specified October 1 and identified the spacecraft as a single experimental satellite. Other accounts referred to a prototype satellite without giving an exact launch date. The available reports do not confirm that the launch has taken place, so the mission remains planned rather than completed.