Regulating orbital sunlight reflection

A new technology threatens to fundamentally change not just the night sky, but the night as we know it. Companies are developing systems that would reflect sunlight from orbit back to Earth after dark, potentially disrupting the nighttime environment on an unprecedented scale.

With the first prototype satellite approved for testing and plans to launch thousands more, DarkSky International is working to establish protections before this technology becomes widespread. We’ve developed resources to help communities, lawmakers, and advocates take action now.

What are orbital illumination systems?

Orbital illumination systems use satellites equipped with large mirrors to reflect sunlight onto Earth’s surface at night, delivering what proponents call “sunlight on demand.”

In July 2026, the Federal Communications Commission (FCC) approved a test satellite proposed by Reflect Orbital, a California-based startup with plans to deploy as many as 50,000 orbital mirrors. Without safeguards, this technology could have far-reaching consequences for wildlife, ecosystems, astronomy, and communities that depend on natural darkness.

Currently, no laws specifically regulate the sale and use of sunlight reflected from orbit.

What can I do to protect my community?

DarkSky has developed ready-to-use resources to help communities and lawmakers establish protections against orbital illumination, including model ordinances for cities and towns, bills for state legislatures, declarations of non-consent for governing bodies and landowners, and an international adaptation guide.

Together, these resources lay the groundwork for the first laws and policies specifically regulating orbital illumination technology, empowering communities and advocates to take action and build a united front to protect the night.