Overview
- Google confirmed the refrigerator‑sized prototype named MVP will fly on SpaceX’s Transporter‑18 Falcon 9 on October 1, 2026 carrying four Trillium TPUs that will run short Gemini inference bursts.
- The mission is a learning test to measure launch survivability, radiation effects and thermal performance rather than to operate a commercial data center in orbit.
- Ground tests at UC Davis showed the TPUs survived heavy proton and vibration exposures but flagged high‑bandwidth memory as especially vulnerable to space radiation.
- Cooling is a principal limit: the onboard heat‑pipe plus radiator design forces roughly 15‑minute operating windows before chips must shut down to shed heat.
- Google plans two follow‑on satellites in 2027 to test high‑bandwidth laser links and says full constellations and cost parity with ground centers depend on lower launch prices and further engineering gains.