Google to Fly AI Chips in Low Earth Orbit in First Suncatcher Test

Overview

• Google announced in late September that it is preparing to launch the Suncatcher MVP prototype on SpaceX’s Transporter‑18 rideshare in partnership with Planet Labs to test AI hardware in low Earth orbit.
• The 1U‑scale satellite will carry four Tensor Processing Units (TPUs) powered by deployable solar panels and will run simple AI tasks to exercise the chips in real flight conditions.
• Engineers will evaluate a vacuum cooling system that combines heat pipes and external radiators and will monitor radiation effects such as single‑event bit flips to identify failure modes.
• Google frames the flight as a data‑collection experiment rather than an operational orbital data center and plans two follow‑on satellites in 2027 to test high‑bandwidth laser links for inter‑satellite networking.
• Industry experts warn major hurdles remain—radiation damage, the difficulty of radiative cooling in vacuum, high launch and manufacturing costs, and orbital congestion—so commercial space data centers are likely years to decades away.