Google is set to launch its first test satellite carrying AI chips into Earth's orbit. This marks a significant step from research to demonstration for its concept of a 'space-based data center' powered by solar energy.
According to the IT industry on September 26, Google will send its first prototype satellite for the space data center project, 'Project Suncatcher,' into orbit on October 1. The satellite will be part of SpaceX's rideshare mission, 'Transporter-18,' launched from Vandenberg Space Force Base in California.
The satellite, named 'MVP,' was developed in collaboration with satellite company Planet and is roughly the size of a refrigerator. It will carry four of Google’s Trillium generation tensor processing units (TPUs) and a solar panel capable of generating about 1 kW of power. The satellite is expected to operate in orbit for one year.
The primary goal of this launch is to validate the 'survivability' of the AI chips. Google explained that this mission aims to determine whether its AI hardware can withstand and function in space. The company plans to collect empirical data on how the TPUs respond to factors such as vibrations and acceleration during launch, low Earth orbit radiation, and extreme temperature fluctuations in a vacuum.
During the approximately 10 minutes from launch to orbit insertion, the satellite will experience continuous acceleration of up to 10G, with individual components like the TPUs potentially facing shocks of 50 to 100G. Given the lack of air in space, which prevents convection cooling, the satellite will also test a cooling method that combines heat pipes and radiators.
Ground testing has already been completed. Google tested the radiation resistance of the Trillium TPUs by bombarding them with proton beams at the Crocker Nuclear Laboratory at UC Davis, and the TPUs withstood cumulative radiation levels exceeding what they would encounter during a five-year mission. Vibration tests were also conducted to prepare the satellite for launch vibrations by shaking it in all three axes.
Google's interest in space is driven by power generation. The company claims that in orbit, where sunlight is almost constant, solar panels can generate up to eight times more power than on the ground. Power has emerged as a key constraint hindering the expansion of hyperscale data centers. Google's parent company, Alphabet, is investing between $195 billion and $205 billion in capital expenditures this year.
Project Suncatcher was first unveiled in November 2025. The ultimate goal is to establish a distributed computing cluster in orbit by connecting solar-powered satellites equipped with TPUs through high-speed optical communication. Future satellites may carry dozens of TPUs each and connect with laser links. Google plans to launch two satellites to test high-bandwidth laser communication between them in 2027.
However, this launch is a limited engineering test rather than a commercial data center. The computational capacity onboard is closer to that of a single server than a commercial facility. SpaceX is also entering the space data center competition, having proposed its own orbital AI data center plans and filed related applications with the Federal Communications Commission (FCC).
* This article has been translated by AI.
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