Google Suncatcher

Google Suncatcher is a prototype space data‑center satellite launched alongside 100+ other spacecraft on a SpaceX Falcon 9 earlier this month. It carries four Tensor Processing Units (TPUs) and can generate up to 1 kW, but only one TPU can run for ~20 minutes at a time due to high power demand. The satellite is operating nominally and already communicating with ground control, running Google DeepMind’s Gemma 4 model to generate simple poetry (e.g., a haiku). Ground engineers tested the TPU‑based inference under space‑radiation and thermal stress. The mission aims to evaluate TPU resilience to bit‑flip errors. If successful, two more satellites with advanced chips will be launched in 2027, featuring higher power generation and intra‑satellite optical links. The project is part of Google’s Starcloud vision for low‑orbit inference workloads; Alphabet’s significant investment in SpaceX supports the required Starship launches. The test is part of Google’s Project Suncatcher· Entity summary generated by Graphiti