Google’s Suncatcher Data Center Is Online — SkimNews
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- Suncatcher launched earlier this month with more than 100 other spacecraft on a SpaceX Falcon 9 and is now online, communicating with the ground after a commissioning process that tested its subsystems for about three weeks.
- Suncatcher generates up to 1 kW of electricity and carries four Google TPUs, but the chips’ power demands permit only one TPU to operate at a time for about 20 minutes.
- Gemma 4 was preloaded onto the satellite and produced a three-line space haiku when engineers sent its first prompt; Google also asked it to report orbital conditions, and a spokesperson said the spacecraft was operating nominally.
- Google is testing the onboard TPUs under thermal stress and space radiation, focusing on radiation-induced “bit flips” that can corrupt data without triggering typical monitoring tools.
- Google plans to launch two more Suncatcher satellites in 2027 if the prototype’s chips prove capable; those spacecraft will have higher power generation and demonstrate inter-satellite optical links.
- Starcloud and Cowboy Space expect to run inference loads on individual satellites, while Suncatcher is largely alone among the visions described in planning high-speed links for coherent distributed workloads.
- Alphabet holds a significant investment stake in SpaceX; Google and SpaceX both require fully and rapidly reusable Starship for orbital data centers, while a peer-reviewed Suncatcher analysis estimated SpaceX would need to fly Starship 1,800 times to match the learning-driven cost reductions it saw with earlier vehicles.
Why it matters: Google has moved orbital AI from concept to operating test, exposing a stark power constraint: four TPUs are installed, but only one can run at a time for about 20 minutes. A two-satellite follow-up is slated for 2027 if the chips prove capable, while Google and SpaceX both remain dependent on rapidly reusable Starship to scale their orbital-data-center plans.
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