Tesla Inc. (NASDAQ:TSLA) and Space Exploration Technologies Corp (NASDAQ:SPCX) CEO Elon Musk has warned that transitioning to sustainable energy may not be enough to protect Earth from long-term climate threats, suggesting massive space-based geoengineering could eventually be needed.
Elon Musk Envisions Satellites Controlling Earth’s Temperature
Musk made the comments over the weekend while responding to a post suggesting that a superintelligent Dyson swarm could be the most practical way to cool the planet.
“A large solar-powered AI satellite constellation” could potentially make tiny adjustments to the amount of solar energy reaching Earth, Musk has previously said.
This time, Musk took the idea further, saying “sentient satellites” could be launched toward Earth-Sun Lagrange points using mass drivers built on the Moon. He suggested such a system could potentially address global warming for around 1 billion years.
Musk also warned that humanity faces threats far beyond today’s climate crisis.
“Extremely severe extinction events happen every 100M years or so,” he said, arguing that simply switching to sustainable energy would not be sufficient to prevent them.
“Space satellites to control temperature and massive geo-engineering will be needed or it will be game over,” he wrote.
‘We Have About 50 Years’ to Act
Musk said massive geoengineering could eventually become necessary, but stressed that action is needed much sooner.
“We have about 50 years or so to take action,” he said, referring to the risks facing people living in vulnerable coastal areas.
His comments come as climate data continues to show sustained global warming. Berkeley Earth estimates that 2025 was the third-warmest year in its instrumental record, at about 1.44 degrees Celsius above the 1850-1900 average.
Climate Research Faces Funding Cuts
The warning also comes amid concerns about U.S. climate research. The Donald Trump administration earlier this month said it would stop funding the Arctic Report Card, an annual assessment tracking changes in the rapidly warming Arctic, according to PBS.
The decision is the latest in a string of actions by the administration to scale back climate research, which officials have criticized as being driven by misinformation and alarmist claims.
Disclaimer: This content was partially produced with the help of AI tools and was reviewed and published by Benzinga editors.
Photo Courtesy: Frederic Legrand – COMEO on Shutterstock.com
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