MOUNTAIN VIEW, Calif. — Google sent a refrigerator-sized experimental satellite into low Earth orbit Thursday, the opening flight of Project Suncatcher — a research push to learn whether AI chips can survive space and someday power solar-driven data centers beyond terrestrial grids, protests, and cooling limits.
A SpaceX rocket carried the prototype, built with satellite imagery firm Planet, around 2:32 p.m. Eastern. On board are four Google Tensor Processing Units that will run the company’s open Gemma model in short bursts — about 15 minutes at a time because of heat constraints — answering simple queries while engineers measure radiation, thermal stress, and launch shock.
Demand for AI compute has outstripped supply. At Google’s May developer event, CEO Sundar Pichai projected $180 billion to $190 billion in capital spending this year — more than six times 2022 levels — on infrastructure and chips. Project lead Travis Beals frames Suncatcher as tapping the sun’s near-limitless power: the craft targets a sun-synchronous orbit where panels stay almost always lit, cutting the need for heavy batteries.
Google eventually envisions clusters of satellites, each carrying dozens of TPUs and linked by lasers to one another and to Earth. Two more satellites are planned next year to test inter-satellite links. Startup Starcloud flew an Nvidia H100 and a Gemini demo last November; SpaceX has talked about orbital AI satellites as early as 2028. Musk has called space the “only way to scale” data centers — a claim that collides with launch costs, repair difficulty, and laser bandwidth limits.
Cooling is the hard problem. Chips dump heat that Earth systems shed with air or water; in vacuum, radiators and pipes must do the work, and radiators are among the heaviest parts of the current mission. Carnegie Mellon professor Brandon Lucia calls the concept “very sci-fi” but notes research-level tech exists — while warning that maintenance complexity may jump by orders of magnitude once hardware is hundreds of miles up.
Environmental and political angles matter on the ground, too. Rockets burn carbon fuels; dying satellites can pollute on re-entry; astronomers worry about more bright objects in the night sky. Yet opposition to power-hungry terrestrial data centers is rising in communities from Virginia to Arizona, where water and electricity rates already shape midterm ads. Beals calls Suncatcher a “moonshot” unlikely to undercut Earth sites within five years, expecting coexistence for a long time.
For now, the mission is a one-year minimal test: prove the chips run in orbit. If they do, Big Tech’s next escape hatch from grid fights may literally be out of this world.