Google is exploring a new approach to meeting the rapidly growing computing and energy requirements of artificial intelligence by considering data centres located in space. The company is working on Project Suncatcher, an initiative that involves using solar-powered satellites fitted with AI chips to perform computing tasks in orbit.
As part of the project, Google is preparing to send a prototype satellite into low Earth orbit for its first round of orbital testing. The experiment will help the company study whether AI computing systems can operate reliably in space and whether such infrastructure could eventually be expanded into a larger satellite network.
Google to Test AI Hardware in Orbit
The upcoming prototype mission is designed to test how Google’s AI hardware performs under the demanding conditions of space. The satellite will face launch-related forces, radiation and extreme temperatures during the experiment.
Google’s research is focused on two key questions: whether AI computing infrastructure can be deployed successfully in space and whether a larger network of AI-powered satellites could eventually be built.
Google is not the only company investigating the possibility of placing data centres in orbit. SpaceX and Starcloud are also exploring the use of low Earth orbit for computing infrastructure.
For its test mission, Google plans to use its in-house Tensor Processing Units (TPUs), which are specifically designed to handle AI workloads. The prototype satellite will operate in low Earth orbit.
Cooling Is a Major Challenge in Space
While Google says its TPU hardware has already undergone internal testing, keeping the chips cool in space presents a major technical challenge.
AI processors generate considerable amounts of heat within a relatively small area. On Earth, conventional cooling systems can rely on air movement and other methods to remove that heat. In space, however, there is no airflow because of the vacuum.
Google explained that heat in space can primarily be transferred through radiators, requiring a different approach to cooling electronic components.
The company is therefore testing various cooling techniques, including a possible combination of heat pipes and radiators to move heat away from the AI chips.
Google Tests Space-Based Cooling Technology
Before conducting the orbital experiment, Google tested its cooling technology inside a thermal vacuum chamber. The setup is designed to recreate the vacuum and thermal conditions that equipment would experience in space.
The upcoming mission will provide Google with an opportunity to test the TPU cooling system under actual orbital conditions. The company expects the results to provide useful information for refining its cooling approach and making further improvements to the technology.
Disclaimer: This article is based on information provided about Google’s Project Suncatcher and its ongoing research. The project and related technologies are experimental and may change as testing progresses. Details mentioned here should not be considered confirmation of a commercially operational space-based data centre.