Reflect Orbital's Space Mirror Project Sparks Environmental and Astronomical Concerns
Reflect Orbital's plan to deploy space mirrors to reflect sunlight onto Earth at night has raised significant concerns among scientists and environmentalists regarding potential impacts on astronomy, wildlife, and human health.
Reflect Orbital, a California-based startup, plans to deploy a constellation of over 50,000 satellites equipped with large mirrors to reflect sunlight onto Earth's surface during nighttime hours. The initiative aims to extend daylight for solar power generation, agriculture, and emergency lighting. The company's first prototype satellite, Eärendil-1, is scheduled for launch in mid-2026, pending approval from the Federal Communications Commission (FCC).
The project has attracted significant investment, including a $6.5 million seed round led by Sequoia Capital in September 2024 and an additional $20 million from Lux Capital and others in May 2025.
However, the proposal has raised substantial concerns among scientists and environmentalists. Astronomers warn that the bright reflections from the mirrors could severely disrupt astronomical observations and increase light pollution.
Environmental groups, such as DarkSky International, have also expressed opposition, citing potential disruptions to nocturnal ecosystems and human circadian rhythms.
Reflect Orbital acknowledges these concerns and has stated its commitment to working closely with the scientific community to minimize potential negative impacts. The company emphasizes that its service is highly localized, with each reflection covering a defined area for a finite period, and that the mirrors can be quickly redirected or deactivated if necessary.
The FCC is currently reviewing Reflect Orbital's application, with a public comment period that closed on March 9, 2026. The agency's decision will determine whether the company can proceed with its planned satellite launches.