Overview
- An experimental Project Suncatcher satellite carrying four tensor processing units (TPUs) is scheduled to launch imminently as Google's first in‑orbit hardware test.
- The prototype will run short AI queries on roughly 1 kilowatt of solar power and is expected to remain operational for about a year while its orbit slowly decays.
- Google previously exposed TPUs to simulated space radiation at UC Davis and found some radiation‑induced bit flips could be cleared by restarting chips, a finding the mission will validate in orbit.
- Engineers built a passive thermal system using heat pipes, conductive layers and radiators because chips can only sustain short continuous runs—company staff cite about 15 minutes before cooldown is needed.
- Google contracted Planet Labs and is coordinating with SpaceX for launch logistics, plans two laser‑link test satellites in 2027, and acknowledges that fully commercial orbital data centers face major cost and engineering hurdles that make wide deployment years away.