Google Runs First Workload on Orbital TPU Cluster Prototype

Four TPUs orbiting Earth have completed Google's first off-planet AI workload, and the company puts the cost of scaling the approach at up to 100 times that of terrestrial data centers. The prototype satellite, launched October 1 on SpaceX's Transporter-18 rideshare mission, is the first hardware in Google's Project Suncatcher program, which targets eventual gigawatt-scale compute in orbit.

Google named the initial test craft MVP. It carries four TPU AI chips powered by solar panels supplying 1 kW. After three weeks of checking the satellite's subsystems, Google instructed the Gemma 4 model pre-loaded on board to write a haiku about being in space. The system downlinked the result via Svalbard, Norway:

Blue marble below Data streams in silent grace Starlight feeds my core.

The company said it also tested other space-themed limericks and telemetry prompts reporting the technical status of the payload systems. The poetry served as an end-to-end proof: code ran on orbital TPUs, generated output, and returned it to ground stations.

What comes next for Suncatcher?

The next test phase will measure how TPUs perform under thermal stress and radiation exposure in orbit. In 2027, Google plans to test twin interconnected satellites, a stepping stone toward an eventual cluster of up to 81 linked satellites operating as a single compute fabric.

Can orbital data centers ever pay for themselves?

Not today, according to Amanda Peterson Corio, Google's global head of energy and power. Space data centers are "incredibly, incredibly expensive, up to 100 times more expensive than building on Earth," she said at The Information's Women in Tech, Media and Finance Summit 2026.

Her guidance was blunt: "Let's explore all the terrestrial options before we go extraterrestrial."

When Google announced Suncatcher last November, it stated that launch costs would need to fall substantially before the economics could work. The company's own math frames the gap. With US data center power costs estimated at roughly $570–3,000 per kW per year, Google calculated that "if launch costs to LEO reach $200/kg, then the cost of launch amortized over spacecraft lifetime could be roughly comparable to data center energy costs, on a per kW basis."

Google theorized that $200/kg could be reached in 2035 — if SpaceX's Starship launches soon and then flies 180 times per year. The company acknowledged a catch: by 2035, terrestrial data center power costs will also have changed, so the comparison point moves along with the launch price.

For now, Suncatcher remains a hardware-in-orbit experiment, not a deployment plan. Four TPUs, one kilowatt of solar power and one haiku stand between Google and a market it admits does not yet close.