Google's Project Suncatcher Satellite Runs Its First AI Prompt on a TPU in Orbit
A ‘hello world’ milestone for Project Suncatcher 🚀 After launching our prototype satellite a few weeks ago, we’ve now successfully sent a command up to orbit, booted up the TPU, ran the prompt, and received our first complete response back on earth - a haiku!
Context
It is the first time Google has run a data center class AI chip in space and returned a model response, an early step toward its moonshot of solar powered AI compute in orbit.
Project Suncatcher is a Google research moonshot exploring whether satellites with Google's TPU chips, powered by the sun, could one day host large scale machine learning. Google launched a prototype satellite built with Planet on October 1 aboard a SpaceX rideshare mission.
Deep dive
Google CEO Sundar Pichai said on Friday that Project Suncatcher reached a hello world milestone. According to the post, a few weeks after launching its prototype satellite, Google sent a command to orbit, booted up the TPU, ran a prompt and received its first complete response back on Earth, a haiku.
Google's blog post, by Travis Beals of its Paradigms of Intelligence team, says that after commissioning the satellite, the team uplinked a prompt to the onboard Gemma 4 open model asking for a haiku about being in space. As the satellite passed Svalbard, Norway, it sent back: Blue marble below, data streams in silent grace, starlight feeds my core. Google calls it the first AI response from a data center class TPU in orbit.
The team then tested limericks and telemetry prompts that report the payload's status. TechCrunch reports the satellite carries four TPUs and generates up to 1 kilowatt, but can run only one TPU at a time for about twenty minutes because of power limits.
Next, Google plans tests of how the chips handle heat and radiation, which can flip bits and silently corrupt data. It says that work paves the way for twin interconnected satellites in 2027.
What to expect next
Watch for results from the thermal and radiation tests, which will show whether TPUs can run reliably in orbit over months. The next milestone is a pair of linked satellites in 2027. Space based compute still faces large hurdles in power, cooling, launch cost and data links, so commercial use remains years away even if the tests go well. Google has not said when it expects to run larger models or multiple chips at once in orbit, so those details will be worth tracking.