- Sources: primary, discussion
- Summary: Google states that Trillium TPUs survived a proton-beam total ionizing dose greater than a five-year mission at UC Davis. The team also shook the satellite on all three axes to mimic rocket launch frequencies and reports that the hardware held up, without publishing a load figure for that test. The post names a Transporter-18 rideshare launch and a two-satellite laser interconnect test in 2027.
- Why it matters: The radiation result is a measured number rather than a projection, and the named launch vehicle and 2027 interconnect test give dated checkpoints for the rest of the plan.
- Follow-up: Track the Transporter-18 launch, any on-orbit TPU telemetry Google publishes, and the 2027 two-satellite laser interconnect result.
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