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Google’s Project Suncatcher: Testing Orbital AI Data Centres in Space

Google's Project Suncatcher prototype has generated the first AI-written poem from space, transmitting a haiku composed by its onboard Gemma 4 model to Earth several weeks after its October 1 launch, Information Age reported. The satellite, launched aboard…

Graphic showing Earth surrounded by a ring of servers

Google’s Project Suncatcher prototype has generated the first AI-written poem from space, transmitting a haiku composed by its onboard Gemma 4 model to Earth several weeks after its October 1 launch, Information Age reported.

The satellite, launched aboard a SpaceX Falcon 9 rocket as part of the Transporter-18 rideshare mission in partnership with Planet Labs, orbited at 800km altitude on a pole-to-pole route. During a ground-station pass over Svalbard, Norway, engineers sent a prompt asking the model to write a haiku about being in space. The response read: “Blue marble below / Data streams in silent grace / Starlight feeds my core.”

created

“That’s crazy” — and then it worked

A Google senior director and Project Suncatcher lead Dr. Travis Beals said the team set out to find reasons the concept would fail. “Everyone’s reaction when they hear this idea is ‘that’s crazy’, and there must be a reason it won’t work,” Beals said. “The first thing we tried to do is to find that reason – and it turns out that it is possible.”

Beals announced that “our chips have officially earned their space wings” after the milestone, which Google calls Suncatcher’s “Hello World” moment.

said

Heat and radiation remain the hard problems

The prototype carries four Google Trillium Tensor Processing Units but can operate only one at a time, generating up to 1kW of electricity, TechCrunch reported. The TPUs produce more than 100,000 watts of heat per square meter, while the radiators can dissipate only about 300 W/m², forcing the satellite to pause every 15 minutes to shed excess heat, Information Age reported.

Engineers are also monitoring how the hardware withstands radiation that can cause “bit flips” and “silent data corruption” events, phenomena the team replicated in lab tests before launch.

can cause

A crowded race for orbital data centers

Google is not alone in pursuing space-based computing. Starcloud launched a conventional NVIDIA H100 GPU last year, and a SpaceX CEO Elon Musk posted that “data centres in space are looking pretty appealing right now.” Blue Origin, Lonestar, Axiom Space, and the European Space Agency are also developing projects, according to Information Age.

Google’s approach differs from rivals like Starcloud and Cowboy Space, which focus on inference workloads on individual satellites. Google plans closely coordinated constellations that share processing tasks via high-speed optical links, TechCrunch reported.

Google Project Suncatcher satellite carrying AI computing hardware and TPUs in orbit above Earth
Photo: Digital Watch Observatory

Two satellites and laser links planned for 2027

Google plans to launch two additional satellites in 2027 to demonstrate higher power generation and optical communication links between spacecraft, Interesting Engineering reported. Such connections could allow multiple processors to coordinate workloads across an orbital network, moving the project beyond a single isolated processor toward distributed machine-learning workloads.

FAQ

The prototype carries four Trillium TPUs but can power only one at a time for roughly 20 minutes due to energy constraints, TechCrunch and Digital Watch Observatory reported.

uses a network

The TPUs generate over 100,000 watts of heat per square meter while the radiators can only dissipate about 300 W/m², so the satellite must pause every 15 minutes to let the radiators emit excess heat into space as infrared radiation, Information Age reported.

The Suncatcher prototype launched on October 1 aboard a SpaceX Falcon 9 rocket, sharing the ride with more than 100 other spacecraft, Interesting Engineering reported.

A Planet director of systems engineering Eric Stevens said the project represents “an experimental moonshot, and an important first step towards moving data centres off planet and into Earth’s orbit.”

About the author: Anika Shah - Technology

MSc in Computer Science, senior reporter. Anika focuses on AI ethics, cybersecurity, and emerging hardware—frequently moderating panels at CES and Web Summit. “Anika Shah decodes tech breakthroughs and startup disruption shaping tomorrow’s digital landscape.”