Plan to sell sunlight at night has worried scientists
The US startup Reflect Orbital tested the idea of illuminating the Earth at night using space mirrors in the California desert. In the experiment, powerful searchlights were used to simulate the illumination effect of future satellites. Astronomers, meanwhile, are concerned that the project could interfere with sky observations, harm human vision, and affect nocturnal animals.
Plan to sell sunlight at night causes concern among scientists
Reflect Orbital is developing a "sunlight as a service" concept. According to the idea, satellites equipped with large mirrors will be launched into orbit. They are expected to direct sunlight to specific regions of the Earth, delivering light on demand even after dark.
However, this initiative has sparked serious debate in the scientific community. Astronomers are particularly concerned about the possibility of tens of thousands of satellites appearing in orbit in the future, capable of illuminating the night sky.
The US Federal Communications Commission (FCC) granted the company permission on July 9, 2026, to deploy and operate the Earendil-1 experimental satellite in orbit. The decision was made despite objections from the astronomical community.
In October, the company conducted an experiment in the California desert to demonstrate the capabilities of its idea. Using powerful searchlights, a mountainside and the surrounding area were illuminated. In this way, it was demonstrated how light reflected from space mirrors could create illumination on the Earth's surface in the future.
However, local astronomers were not warned about the experiment in advance. This situation further fueled dissatisfaction with the project.
A powerful light source visible in the distance cast long shadows from low bushes. The illumination in the area was brighter than the light provided by a full Moon.
The experiment, apparently, was also a surprise for some local officials and the county administration. Whether the company obtained permission to conduct the test and through what procedure it was processed — there are no clear answers to these questions yet.
Reflect Orbital representatives stress that the project will bring great practical benefits. According to the company, sunlight reflected from space could expand solar energy capabilities, facilitate nighttime search and rescue operations, and help in rapid response to natural disasters.
The energy-related part of the idea is based on delivering light to relevant areas even after the sun has set. For search and rescue operations, it is proposed to make finding people and providing them assistance easier by illuminating dark areas.