\n<\/p>\n
At a lab in San Francisco last month, a team of technicians in protective suits and hairnets poked, prodded and inspected a refrigerator-sized satellite commissioned by Google.<\/p>\n
First, they examined the satellite\u2019s solar panels, which would unfurl in space and face the sun. The satellite was then placed on a table and shaken rapidly in a vibration test, to see whether the chips inside would be damaged or the machine would come apart during a journey into space. The technicians painstakingly painted a small line over each screw to help indicate any loosening during the shaking.<\/p>\n
The satellite passed the vibration test, with its screws staying put and the chips remaining intact. James Manyika, Google\u2019s senior vice president for research, called the results \u201cgreat,\u201d but he said he still wondered what would happen when the satellite went to space.<\/p>\n<\/div>\n<\/div>\n
The work was part of an ambitious effort from Google called Project Suncatcher, which aims to put artificial intelligence data centers into space and to harness the sun\u2019s energy to power them. On Oct. 1, the satellite from the San Francisco lab \u2014 which Google has named MVP \u2014 is set to become the first step toward that goal by a major tech company. It will be loaded onto a SpaceX Falcon 9 rocket at the Vandenberg Space Force Base near Santa Barbara, Calif., and then launched into orbit.<\/p>\n
Google provided The New York Times with the first inside look at the project, which seemed like a science-fiction dream just a year ago.<\/p>\n
Elon Musk, Jeff Bezos, Sam Altman and others have pledged support for orbital data centers, but the idea faces many challenges, including withstanding radiation in space and the costs of getting machines beyond the atmosphere. Yet as data centers grapple with terrestrial opposition and physical limits, having computing facilities float above Earth has become increasingly attractive.<\/p>\n
To be clear, Google is not sending up a full data center \u2014 only an experimental precursor to one. MVP contains four specialized computer chips called \u201ctensor processing units,\u201d which have the computing power of one server in a data center. The satellite\u2019s solar panels will supply only about one kilowatt of power \u2014 roughly the amount needed to run a hair dryer \u2014 to the chips.<\/p>\n<\/div>\n<\/div>\n
But that will be enough for Google to test its hardware against the harsh conditions of space. The satellite will answer simple A.I. queries and operate for a year, though it is set to circle Earth for up to six years. Eventually, it is expected to succumb to Earth\u2019s gravitational pull and burn up as it descends through the atmosphere.<\/p>\n<\/div>\n<\/div>\n
Mr. Manyika said Google\u2019s expectations for the satellite were tempered.<\/p>\n
\u201cWe don\u2019t expect, to be perfectly frank, that we\u2019ll have anything usefully operational in the next few years,\u201d he said, comparing the mission to the company\u2019s early efforts to build driverless cars. \u201cRemember how Google was researching for like 15 years, before anything showed up? I think this is going to look like that.\u201d<\/p>\n
Expanding from one satellite to a vast network of them that operate like a giant data center will take years and enormous funds, said Brandon Lucia, a professor of electrical and computer engineering at Carnegie Mellon University.<\/p>\n<\/div>\n<\/div>\n
\u201cIf you do this on a large scale, there are additional engineering problems,\u201d he said. \u201cThat is uncharted waters.\u201d<\/p>\n<\/div>\n<\/div>\n
Project Suncatcher was the brainchild of Blaise Ag\u00fcera y Arcas, 51, a Google vice president and A.I. researcher who leads a team studying intelligence. About three years ago, he attended a gathering of entrepreneurs and A.I. researchers where the main topic was the escalating energy needs of A.I. systems. Mr. Ag\u00fcera y Arcas left the event convinced that data centers needed to move to space to harness solar power.<\/p>\n
The idea \u201chas been on my mind since I was kid,\u201d he said. \u201cThere are longstanding ideas in science fiction about using stars for computation.\u201d<\/p>\n
Mr. Ag\u00fcera y Arcas soon took the notion to Mr. Manyika, who was convinced it would not work but agreed to tests that might determine whether A.I. chips could be cooled in space and survive the radiation there.<\/p>\n
So in February 2025, Google began taking A.I. chips to Crocker Nuclear Laboratory in Davis, Calif. There, an enormous particle accelerator known as a cyclotron, which contains magnets once used in a similar machine during the Manhattan Project, blasted the chips with a radiation dose equivalent to the amount of exposure they would get from five years in space.<\/p>\n<\/div>\n<\/div>\n
Radiation can cause \u201cbit flips,\u201d errors that alter the physics of a circuit to change its binary code from a zero to a one, or a one to a zero. These can cause big problems. But the results of Google\u2019s cyclotron tests were promising, with the company finding that restarting the chips could usually reset the bit flips.<\/p>\n
In May 2025, Mr. Ag\u00fcera y Arcas joined a meeting that Mr. Manyika had arranged to pitch Sundar Pichai, Google\u2019s chief executive, on going further with the project. To his surprise, there was another attendee: Sergey Brin, Google\u2019s co-founder.<\/p>\n
Mr. Brin and Mr. Pichai quickly greenlit the project. \u201cOK, so this is a good idea,\u201d Mr. Brin had said, according to Mr. Ag\u00fcera y Arcas. \u201cLet\u2019s talk about how we\u2019re doing it.\u201d<\/p>\n
With their approval, Project Suncatcher accelerated. Google declined to say how much it is spending, but estimates the cost of orbital data centers will become roughly equivalent to terrestrial ones in the mid-2030s, as the price of sending satellites into space decreases.<\/p>\n
Google soon contracted with Planet Labs, a satellite imagery company that it had invested in, to commission a satellite to carry the A.I. chips into space. James Mason, the chief space officer at Planet Labs, said he had spoken with Mr. Brin over the years about doing computing work in space, but the idea had always seemed hazy.<\/p>\n<\/div>\n<\/div>\n
\u201cBack then, it seemed further off,\u201d Mr. Mason said. \u201cThat was really before large language models took off and A.I. demand really started going exponential.\u201d<\/p>\n
Planet Labs agreed to launch two satellites for Google in 2027. But the internet giant soon said it wanted to be up in orbit this year and was willing to take on risks to meet that timeline, said Eric Stevens, a director of systems engineering at Planet Labs. To speed up, Google installed its chips into a ready-made Planet Labs satellite and began testing it.<\/p>\n
The biggest challenge was how to cool the A.I. chips, which heat up when they perform calculations and process information. Fans, which typically help dissipate the heat, do not work in space. So the Silicon Valley company instead developed a cooling system that uses layers of conductive material to expel the heat into space.<\/p>\n<\/div>\n<\/div>\n
The bottom layer is made up of Google\u2019s A.I. chips, which sit on a green motherboard. The next layer consists of \u201cthermal interface material,\u201d a pale green putty that comes in sheets like Fruit Roll-Ups and connects the chips to layers of aluminum and copper, radiating heat away from the motherboard. Finally, there is a radiator panel, which projects heat into space.<\/p>\n
The chips can operate for about 15 minutes in space before needing to be shut down so they can cool off, said Travis Beals, Google\u2019s senior director of product management for Project Suncatcher. During that time, the chips can process short queries so Google\u2019s A.I., known as Gemini, can respond.<\/p>\n
Google is already looking ahead. Next year, it plans to launch a pair of satellites. It also has designs for fleets of more than 80 satellites that will fly in close formation and communicate with one another as they process A.I. queries. And Google is meeting with designers to potentially build a custom satellite the length of a soccer field.<\/p>\n
\u201cIf five years from now, everything we\u2019ve done has worked perfectly, it probably means we\u2019ve not taken enough risk and we\u2019ve not learned as much as we could,\u201d Mr. Beals said. \u201cIf we\u2019re really successful with this in the long run, this will ultimately be boring and people won\u2019t think anything at the fact that their Gemini query might be getting served in space.\u201d<\/p>\n<\/div>\n<\/div>\n