FCC Approves Space Mirror Satellite to Light Up Night Sky

On July 9, the Federal Communications Commission authorized a Santa Monica, California-based startup called Reflect Orbital to build, launch, and operate a mirror satellite that will test the ability to reflect sunlight onto specific locations on Earth during the night. The experimental spacecraft, named Eärendil-1, is scheduled to launch later this year into an orbit between 600 and 650 kilometers in altitude.

The 142-kilogram satellite will deploy an 18-meter thin-film reflector once in low Earth orbit. According to the company, the reflector could illuminate areas 5 to 6 kilometers in diameter for brief periods. The primary objective of the mission is to evaluate the technical feasibility of the ultrathin, highly reflective, film-based reflector.

What Is a Space Mirror?

Eärendil-1 is designed to catch sunlight in space and redirect it back to Earth, creating a spot of light on the ground that moves as the satellite orbits. The company has proposed a range of applications for the mirror satellite technology, including providing illumination for construction sites, supporting search-and-rescue operations, and helping critical infrastructure during emergencies.

But the most ambitious goal — and the one that has drawn the most attention — is using such satellites to reflect sunlight onto terrestrial solar farms. The idea is to extend the productive hours of solar energy facilities, allowing them to generate electricity even after the sun has set. Reflect Orbital has proposed operating thousands of such spacecraft to create a constellation capable of delivering on-demand sunlight.

“We’re grateful to the FCC for recognizing the importance of testing novel technologies in space,” Ben Nowack, chief executive of Reflect Orbital, said in a statement. “This license is the first step toward rigorously testing our technology’s efficacy and the safeguards we have developed.”

Criticism from Astronomers and Environmentalists

The approval has drawn sharp criticism from two groups: astronomers and environmentalists. At a June 4 National Academies meeting, Tony Tyson, distinguished research professor at the University of California, Davis, and chief scientist of the Vera C. Rubin Observatory, said the Reflect Orbital project could interfere with astronomical observations. Astronomers worry that such spacecraft could interfere with their operations and even be dangerous to instruments mounted on telescopes or to people looking through telescope lenses.

Environmentalists have warned that the reflected sunlight from a constellation of such spacecraft could disrupt the diurnal cycles of plants and animals. The concern is that artificial illumination at night, even if brief and localized, could confuse wildlife that relies on natural light cycles for feeding, breeding, and migration.

The controversy echoes broader debates about energy infrastructure and its environmental trade-offs. As with any new technology, the potential benefits must be weighed against the risks.

What Comes Next

The FCC authorization allows Reflect Orbital to deploy the test satellite at an altitude of about 625 kilometers. The company said it has seen strong interest in its technology for a variety of civilian, commercial, and government applications. The test mission will help determine whether the concept is technically viable and whether the safeguards the company has developed are sufficient.

“This ruling is hugely validating for our company and reflects America’s leadership in testing innovative space technology,” the company said on social media.

The satellite is named after a character from J.R.R. Tolkien's Lord of the Rings series, a fitting reference for a project that aims to bring a little light to the dark side of the planet. Whether that light will be a boon or a bane remains to be seen, but the test will provide data that could shape the future of space-based illumination.

For now, the debate continues. Astronomers and environmentalists are watching closely, and the outcome of the Eärendil-1 mission could set a precedent for how regulators handle similar proposals in the future. As the world turns its attention to other major events, the mirror satellite quietly moves toward launch, carrying with it the hopes of its creators and the concerns of its critics.