FCC approves Reflect Orbital test for sunlight-reflecting space mirror

The U.S. Federal Communications Commission (FCC) has approved a test for a space-based solar reflector system, marking a significant development in the commercialization of orbital technologies. The decision clears California-based startup Reflect Orbital to deploy its Earendil-1 satellite, which will demonstrate the ability to reflect sunlight onto specific regions of the planet. The project, which has drawn criticism from astronomers and environmentalists, raises questions about the environmental, scientific, and ethical implications of manipulating Earth’s natural light cycles.

The FCC’s approval centers on a 60-foot (18-meter) aluminized mirror, designed to be unfurled in low-Earth orbit and used to reflect sunlight onto targeted areas. The satellite, scheduled for a 2026 launch, will demonstrate the ability to illuminate a 5-kilometer-wide region for short durations, with the mirror repositioned every four minutes. Reflect Orbital envisions a future where such technology could provide “sunlight on demand” for agricultural, emergency, and industrial applications, though the company has not yet disclosed pricing models.

Despite the FCC’s endorsement, the project faces fierce opposition from astronomers and scientists. Critics argue that the reflector’s bright, moving beams could disrupt celestial observations, interfere with circadian rhythms of plants and animals, and contribute to “orbital light pollution.” The American Astronomical Society expressed concerns that a full constellation of such satellites could become the brightest artificial objects in orbit, potentially rendering ground-based telescopes ineffective for deep-space research. The FCC, however, maintained that its authority is limited to regulating radiofrequency spectrum, not the physical impacts of satellites. In its order, the agency dismissed environmental concerns, stating that the project aligns with its mandate to “encourage innovation and economic growth.”

Reflect Orbital’s ambitions extend beyond the Earendil-1 test. The company has outlined plans to deploy up to 50,000 satellites by 2035, creating a global network capable of delivering “clean energy on demand.” While the startup claims its system could extend solar power generation during nighttime hours, critics warn that the environmental costs of manufacturing, launching, and maintaining such a vast constellation could outweigh any benefits. The process of deorbiting satellites, for instance, risks depositing debris into Earth’s atmosphere, potentially harming ecosystems and contributing to atmospheric pollution.

The approval also underscores broader concerns about the militarization and commercialization of low-Earth orbit. Reflect Orbital’s technology, which could be repurposed for military or surveillance applications, joins a growing list of “weird space stuff” — a term coined by the FCC to describe unconventional orbital ventures. These include plans for orbital AI data centers, space advertising, and artificial meteor showers. The rapid proliferation of such projects has raised questions about the adequacy of existing space governance frameworks, particularly the 1967 Outer Space Treaty, which prohibits national appropriation of space but does not address the activities of private corporations.

SpaceX’s expansion of its Starlink constellation, which now includes over 11,000 satellites, has already forced adjustments in launch schedules for missions like NASA’s Artemis program. The FCC’s recent approval of SpaceX’s bid for one million additional satellites — 40 times the total number ever launched, has further intensified fears of orbital congestion. Reflect Orbital’s project, while smaller in scale, adds another layer of complexity to an already crowded sky, with scientists warning that the cumulative effects of multiple megaconstellations could trigger a “Kessler Syndrome” of cascading collisions.

As the debate over the Earendil-1 test unfolds, the broader implications of this technology remain uncertain. While proponents argue that solar reflectors could revolutionize energy access and disaster response, opponents emphasize the irreversible damage to scientific research and natural ecosystems. The FCC’s decision reflects a regulatory environment increasingly shaped by corporate innovation, even as it leaves critical questions about sustainability and equity unaddressed. For now, the mirror’s first test flight looms as a pivotal moment in the ongoing struggle to define the boundaries of humanity’s reach into space.