Space Mirrors Promise Nighttime Sunlight

Reflect Orbital has secured FCC authorization to launch a prototype satellite, Eärendil-1, in low-Earth orbit later this year. This satellite is intended to redirect sunlight to specific terrestrial locations during nighttime hours using a large reflective surface. The company envisions deploying a constellation of 50,000 such satellites by 2035.

The proposed technology aims to provide light on demand, potentially benefiting sectors like solar energy, agriculture, and emergency response. Reflect Orbital suggests applications such as enhanced search-and-rescue operations and illuminated streets without carbon emissions.

However, the initiative has drawn significant criticism. The American Astronomical Society, DarkSky International, and others have raised concerns about light pollution and space debris. Astronomers warn of an existential threat to optical observations, while others point to potential disruptions for nocturnal wildlife and aviation safety. Nearly 2,000 public comments opposing the plans were submitted to the FCC.