Google sent TPUs to space, CEO Sundar Pichai shares a 'Hello World' update

Google’s Project Suncatcher has achieved its first AI response from a data center-class TPU launched in orbit earlier this month. Sharing the milestone on X (formerly Twitter), CEO Sundar Pichai wrote: “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!,” Pichai added. For those unaware, Google’s Project Suncatcher is a research project that aims to build AI data centres in space using networks of solar-powered satellites equipped with Google’s custom Tensor Processing Units (TPUs). The idea is to use the Sun’s energy to power AI computing in orbit, potentially reducing the need for land and electricity resources on Earth.

Google Project Suncatcher achieves its first milestone

In early October, Google sent four TPUs into orbit to test whether AI hardware could operate in space. “The initial goal was to see if our chips could turn on, process a prompt, and transmit a response back to Earth,” the company said in an X post. This week, the company prompted its TPUs to generate a haiku from space. Soon after, the tech giant got a transmission back indicating that its “moonshot to power compute in space may actually work”.

Here’s what Google’s update on Project Suncatcher says

"On October 1, we launched our prototype satellite for Project Suncatcher. The launch marked the first step in our long-term research moonshot to explore powering AI compute in space. Since then, we've spent the last few weeks completing our commissioning checklist, which included powering up the host and TPU trays and successfully running early machine learning tests. This week, we reached our "Hello World" milestone: the first-ever AI response from a data center class TPU in orbit. During a ground-station pass, we uplinked our first prompt to our onboard Gemma 4 open model, asking it to generate a haiku about being in space. As the satellite passed by Svalbard, Norway, the downlinked poem confirmed success: Blue marble below Data streams in silent grace Starlight feeds my core. ✨ Following this initial output, we tested space-themed limericks and telemetry prompts reporting the technical status of the payload systems. Next, we will continue with a series of tests to evaluate how TPUs perform under thermal stress and radiation exposure in orbit. Verifying our TPUs can reliably execute workloads in space paves the way for our next milestone of twin interconnected satellites in 2027. Our chips have officially earned their space wings — an important achievement on the long road ahead for this cosmic moonshot."