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Google sends AI chips into orbit on SpaceX rocket to test orbital data centers
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Google is taking a first step toward exploring the feasibility of space-based data centers by sending four of its Tensor Processing Unit (TPU) AI chips into orbit. The satellite carrying the chips is scheduled to launch next week aboard a SpaceX rocket owned by tech billionaire Elon Musk. Google outlined several challenges in a blog post, including the intense vibrations and gravitational forces during launch, which the chips survived in Earth-based vibration tests. Another major concern is radiation outside Earth's atmosphere, which can damage electronics; Google simulated this by bombarding the TPUs with a proton beam in the lab. While Google believes the chips can withstand a planned five-year mission, it acknowledges that some conditions can only be tested in space. Cooling is a particular problem, as space's vacuum prevents heat dissipation through airflow, requiring a newly designed cooling system to be tested. Data transmission between fast-moving satellite data centers also poses a challenge. Musk has previously advocated for orbital data centers, citing the potential for abundant solar power and as a solution to growing opposition to large terrestrial AI data centers.
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The Google logo shines above the entrance to the company's German headquarters. Source: Christian Charisius/dpa
Google is taking a first step toward exploring the feasibility of data centers in space. The internet giant is sending four of its AI chips into orbit to test how well they withstand the conditions of space.
Challenges from Launch to Orbit
According to a Google blog post, potential problems could arise as early as the launch phase, when the processors are exposed to vibrations and multiple times the force of Earth's gravity. The company noted that the chips successfully passed vibration tests on Earth.
Another major challenge is the intense radiation outside Earth's atmosphere, which can damage electronics. To simulate these effects, Google subjected the TPU (Tensor Processing Unit) chips to a proton beam in the lab. While the company is confident the technology can survive a planned five-year mission in space-based data centers, it acknowledged: "But some things can only be tested in space."
Launch Details
The satellite carrying Google's chips is scheduled to launch next week as one of many payloads aboard a rocket from SpaceX, the spaceflight company led by tech billionaire Elon Musk.
High Expectations for Orbital Data Centers
Musk has frequently announced plans to build SpaceX's own data centers in orbit, citing the potential to generate large amounts of solar power for their operation. Meanwhile, the ongoing expansion of ever-larger data centers for artificial intelligence operations is facing growing opposition, particularly in the United States. Outsourcing them to space, in Musk's view, could offer a solution.
Remaining Open Questions
Google emphasized that many questions remain unanswered. Key challenges include:
- Cooling: Data centers generate significant heat during operation. While space is extremely cold, the vacuum means there is no airflow to carry heat away. Heat must be dissipated through cooling elements, requiring a different approach than on Earth. Google said the test will explore how its newly designed cooling system performs under real space conditions.
- Data Transmission: Transferring large volumes of data between individual data center satellites moving at high speeds presents another significant hurdle.
Source: dpa/gold
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Google launches TPU AI chips into orbit on SpaceX rocket to test orbital data centers