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12h ago

Google’s Prototype AI Satellite Reaches Orbit and Its TPUs Are Operating

The flight will collect real‑world data on radiation effects, heat rejection, and inter‑satellite links to judge whether orbital data centers can work at scale.

Google, headquartered in Mountain View, California, says it’s playing the long game in orbital data centers.
The satellite carrying Google's first TPU into orbit was built by Planet Labs PBC.
(Nov. 2, 2023) --- The sun's glint beams across the Pacific Ocean in this photograph from the International Space Station as it orbited 259 miles above the Hawaiian island chain.
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Overview

  • Google launched the refrigerator‑sized Project Suncatcher prototype on Thursday, October 1, 2026, and by Oct. 2 confirmed mission contact and that the four onboard Tensor Processing Units are functioning.
  • The satellite, built with Planet Labs and flown on SpaceX’s Transporter‑18 rideshare, carries four Trillium TPUs that together match about one terrestrial server rack slot and run short inference bursts of roughly 15 minutes before cooling.
  • Engineers will gather data in the coming weeks on launch stresses, radiation‑induced logic errors and thermal limits after ground tests at UC Davis showed the chips survive simulated five‑year radiation doses but still have some error rates.
  • Google plans two follow‑on satellites in 2027 to test continuous operation and high‑bandwidth laser links between spacecraft because scalable clusters require reliable inter‑satellite networking and advanced radiators for heat rejection.
  • Economic modeling in a peer‑reviewed paper shows orbital data centers are not yet cost‑competitive and would need dramatic launch‑price declines to roughly $200 per kilogram over years, so Suncatcher remains a long‑horizon research program rather than an immediate commercial service.