SunCatcher mission goals for datacentres in house ⋆ Electronics Weekly

Google’s Challenge Suncatcher is scheduled to ship its first prototype satellite tv for pc into orbit subsequent week, to judge how Google Tensor Processing Models (TPUs) carry out in house.

Google describes the mission as a “moonshot” to place AI into Area. However the longer phrases plan is the imaginative and prescient of internet hosting AI datacentres in house.

Travis Beals, its Senior Director of Paradigms of Intelligence, writes in a compnay weblog put up:

“Simply as early analysis into autonomous driving and quantum computing required years of experimentation earlier than we bought to sensible techniques, exploring compute in house begins with measured, deliberate steps.”

“Turning that concept into actuality begins with a primary query: Can our AI {hardware} function in house? This preliminary mission onboard the upcoming Transporter-18 rideshare mission with SpaceX was developed in partnership with Planet. It’s designed to assemble in-orbit knowledge on how our TPUs deal with the bodily stress of spaceflight and the radiation and thermal extremes of house.”

The thought is that in Low Earth Orbit (LEO) satellites can entry nearly fixed daylight. This is able to allow producing as much as eight instances extra solar energy than on Earth. The bigger imaginative and prescient is then linking collectively a number of constellations of satellites to handle bigger AI workloads whereas in orbit.

Challenges

Apparent challenges embody forces of gravity and radiation.

On the journey to house, particular person parts – such because the TPU chips – will expertise forces as much as 50 to 100 g. It means the Google crew have been conducting vibration testing so the {hardware} holds as much as the drive.

Ranges of radiation current one other menace. Google says its crew has examined TPUs in a proton beam facility at UC Davis’s Crocker Nuclear Laboratory whereas working AI workloads. For instance, they monitored how errors, like a bitflip, would have an effect on workloads.

“Preliminary outcomes have proven that our Trillium TPUs maintain up remarkably effectively, and might survive a radiation complete ionizing dose higher than what they’d obtain throughout a five-year house mission,” writes Beals.

Google can be placing its first TPUs in orbit subsequent week, on a prototype. The goal is to get knowledge to tell future launches.

Challenge Suncatcher was introduced in November 2025.

ST

ST, for one, ST sees orbiting datacentres as a risk by 2029. Again in Could, Remi El-Ouazzane – President of the Microcontrollers, Digital ICs & RF Merchandise Group at ST – commented:

“My wild guess as to after we might begin to see, a related quantity of orbital knowledge centres within the sky, I’d say three years from now could be perhaps an attention-grabbing guess.” says

Picture: Google – (prime) TPU 8 (backside) Evolution of a free-fall (“no thrust”) constellation beneath Earth’s gravitational attraction. It’s modelled to the extent of element required to acquire sun-synchronous orbits, in a non-rotating coordinate system. That is relative to a central reference satellite tv for pc S0.