Elon Musk wants AI satellite constellation to prevent sunlight from warming Earth

The world’s richest man has entered one of the most controversial climate debates of our time: whether humans should try to cool the planet by dimming sunlight.

Early Monday morning, Elon Musk took to X to share his thoughts on solar radiation management (SRM), a geoengineering technique that would involve reflecting a portion of the Sun’s rays away from Earth.

As global temperatures edge dangerously close to critical thresholds and international emissions goals continue to fall short, SRM has been gaining attention as a last-resort climate fix.

Musk said satellites can be used to control the amount of sunlight that reaches the planet.

The concept, known as space-based solar radiation management, would theoretically use mirrors or reflective materials in orbit to bounce sunlight back into space.

A large solar-powered AI satellite constellation would be able to prevent global warming by making tiny adjustments in how much solar energy reached Earth— Elon Musk (@elonmusk) November 3, 2025

It’s an idea that blends climate science with aerospace engineering, and one that has split the scientific community down the middle.

Musk’s comment was brief, but it carried weight.

As the CEO of the world’s largest satellite operator, his endorsement of a space-based approach inevitably sparks speculation about whether SpaceX could one day play a role in such a project.