The Federal Communications Commission approved Reflect Orbital’s plan to launch a mirror satellite, Eärendil-1, which would reflect sunlight to illuminate dark areas of Earth. The startup claims the technology could advance clean energy, but astronomers and environmental groups warn of risks to night skies, ecosystems, and safety.
FCC Clears Experimental Satellite Amid Scientific and Environmental Concerns
The Federal Communications Commission (FCC) approved Reflect Orbital’s request to build and launch a mirror satellite capable of reflecting sunlight toward Earth, marking a pivotal step for the startup’s ambitious project. The experimental satellite, named Eärendil-1 after a character from “The Lord of the Rings,” will orbit 625 kilometers above Earth and use an 18-meter reflector to illuminate areas 5 to 6 kilometers in diameter for brief periods. The company’s statement called the approval “hugely validating,” emphasizing its goal to demonstrate how space-based sunlight could support clean energy and reduce reliance on fossil fuels.
Reflect Orbital’s technology aims to charge solar panels at night by reflecting sunlight, enabling power companies to avoid increased fossil fuel use. “The reflected light is diffuse and nearly identical to natural daylight conditions,” the company said in a report, adding that the approach would work with existing solar infrastructure. However, the FCC’s decision has sparked fierce criticism from scientists and environmental advocates, who argue the project poses significant risks to astronomy, ecosystems, and public safety.
Astronomers Warn of Night Sky Threats and Ecological Risks
The American Astronomical Society, the Royal Astronomical Society, and DarkSky International have raised alarms about the potential consequences of orbital solar reflectors. DarkSky, which focuses on reducing light pollution, stated the FCC’s decision “leaves critical concerns—including impacts on wildlife, astronomy, public safety, and the nighttime environment—largely unaddressed.” The organization warned that the satellite could degrade nocturnal ecosystems, disrupt human wellbeing — specifically sleep, metabolic processes and hormonal cycles — and damage sensitive astronomical instruments. “Moving beams of light from space-based mirrors could create sudden flashes, glare, or sweeping illumination patterns if systems malfunction or mirrors fail to stow,” the group said in a statement.
John Logsdon, professor emeritus at George Washington University’s Elliott School of International Affairs, highlighted the tension between innovation and regulation. “Astronomers worry that a constellation of orbital mirrors like Reflect Orbital is planning might compromise the ability to view the night skies,” he told Time. Meanwhile, Nowack defended the project, stating, “We want to precisely control where our sunlight is going, and we only want to light up areas that want that sunlight.”
Planned Expansion Sparks Fears of Light Pollution and Regulatory Gaps
Reflect Orbital envisions a future with thousands of satellites, including 5,000 by 2030 and 50,000 by 2035. The company’s roadmap, outlined in Time, includes scaling the project to provide ‘round the clock indoor-level lighting to customers who request it. However, critics argue this expansion could transform the night sky. “For optical astronomy, this is an existential threat, and we hope that the regulators will share that view,” said Betty Kioko, institutional affairs officer for the European Southern Observatory.
The FCC’s decision emphasized that Eärendil-1 is a single experimental satellite, not a commercial constellation. However, the agency acknowledged it lacks authority to evaluate environmental impacts beyond radiofrequency spectrum, leaving gaps in oversight. This highlights a significant gap in how emerging space technologies are regulated, DarkSky noted. Rubin Observatory, remain skeptical about the project’s technical feasibility, stating he remains skeptical that these satellites will be able to direct reflected light with the precision the startup claims.
What Comes Next for Reflect Orbital and Space Regulation?
With the FCC’s approval, Reflect Orbital plans to launch Eärendil-1, but the project’s long-term viability hinges on addressing regulatory and scientific concerns. The company argues its technology could aid search-and-rescue operations, support solar energy facilities, and provide lighting for remote construction sites. However, opponents warn that even a single satellite could set a dangerous precedent.
The debate over Eärendil-1 underscores broader challenges in governing space technologies. As private companies push the boundaries of innovation, regulators face pressure to balance progress with environmental and scientific safeguards. With 50,000 satellites projected by 2035, the question remains: Will the night sky remain a shared natural resource, or will it become a battleground for commercial interests? For now, the FCC’s decision leaves these questions unanswered, as the first mirror in the sky prepares to take flight.
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