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FireSat Satellites Launch to Catch Small Wildfires Early
Google-backed FireSat satellites launched July 7 to detect fires as small as 5 by 5 meters and deliver faster wildfire imagery worldwide.
Image: Muon Space and Earth Fire Alliance
As smoke from hundreds of wildfires spreads across Canada and the United States, three Google-backed satellites have reached orbit to begin building a dedicated early-warning system for fires.
The microsatellites launched aboard a SpaceX Falcon 9 from Vandenberg Space Force Base in California on July 7, 2026. The mission moves the FireSat constellation, managed by the nonprofit Earth Fire Alliance, into “initial operational capability.”
After roughly three months of testing, the satellites are expected to start supplying data to fire agencies. Their coverage will reach every fire-prone region on Earth at least twice per day, with initial service planned for the United States, Australia, and Europe before the end of 2026.
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How FireSat detects smaller fires
FireSat is the first satellite constellation built specifically to detect wildfires. Its satellites, designed by California-based manufacturer Muon Space, use multispectral imaging that can see through smoke and clouds and identify fires as small as five by five meters, or about 16 by 16 feet.
The system’s capabilities were demonstrated by a FireSat Protoflight satellite launched in March 2025. It collected more than one million images and detected low-intensity fires that existing satellites could not see.
FireSat’s infrared imagery shows the Nipigon 6 fire in Ontario, Canada, on June 15, 2025, identifying active fire regions, burn scars, and older burn scars. The program has received more than $15 million from Google for its initial deployment, while the Bezos Earth Fund has committed $26 million.
The first “early adopter” users will include fire agencies in California, Colorado, Australia, and Portugal. As additional satellites launch, Earth Fire Alliance aims to provide updated imagery worldwide every hour by 2029. Once a constellation of more than 50 satellites is deployed in the early 2030s, the target is imagery refreshes every 20 minutes.
The alliance projects that even hourly revisits could help save more than $1 billion in fire damage, prevent nearly 22 million tons of carbon emissions, and protect 3,500 homes and 1.3 million acres of land.
Google Research plans to compare FireSat’s operational data with historical imagery using the company’s AI models. The goal is to improve identification of very small fires and support wildfire prediction models. Google described the launch as “another tangible step forward in putting practical AI to work for climate resilience.”
FireSat arrives as wildfire resources tighten
The satellites are entering service as climate change drives larger and more intense fires, while firefighting agencies face limited aircraft, personnel, and funding. Google’s own energy use rose 37 percent in 2025, and the company has acknowledged the difficulty of building enough clean-energy projects to offset data-center emissions. New natural-gas projects supporting the expanding US data-center sector could collectively emit more than 129 million tons of greenhouse gases annually.
Early detection can give agencies more time, but it cannot replace prescribed burns, ecosystem management, or the resources needed to suppress fires. Canada’s boreal forests have produced two of the country’s most destructive wildfire seasons in 2023 and 2025, and the last three seasons were among the 10 worst on record.
“What is unfolding is what climate and forest scientists have been predicting for 30 years. That as the world gets hotter and drier, we are exposing forests to more and more risk, and the old strategies of fire suppression are simply being overwhelmed.”
The Canadian Wildland Fire Information System listed nearly 900 active wildfires as of July 17, after more than 3,600 fires had burned over 6.6 million acres this year. Dozens of fires classified as “out of control” are being monitored rather than actively suppressed as agencies balance scarce resources against risks to firefighters.
Canada leased 10 new aerial firefighting aircraft this year as surge capacity for provinces, which usually bear responsibility for purchasing or contracting the fixed-wing tankers and heavy-lift helicopters needed to fight fires in remote forests. The blazes have also sent hazardous smoke across Canadian and US cities, affecting more than 100 million people.
Jeremy Hsu reports on deep tech and AI and has written for New Scientist, Scientific American, IEEE Spectrum, Wired, Undark Magazine, and MIT Tech Review. He holds a Master of Arts in Journalism from NYU and a bachelor’s degree from the University of Pennsylvania in History and Sociology of Science, with a minor in English.
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via Ars Technica
