A California-based startup is drawing global attention with a bold idea that sounds like science fiction: delivering sunlight to Earth even after sunset.
The company, Reflect Orbital, is exploring a system of satellites equipped with large mirrors that can redirect sunlight onto specific locations on the planet at night.
The concept recently gained traction online after a video explaining the technology went viral. In the clip, the narrator describes the idea as “selling sunlight” from space, comparing it to an on-demand service similar to food delivery apps. While the comparison is playful, the underlying proposal is rooted in established scientific principles. As per the video, 2,60,000 people have already applied.
For many people it has not gone down well at all. One wrote: “You mess with nature, nature will f you,” another comment read: “it will disturb sleep pattern of animals and will disturb mating process of insects etc not needed this at this cost”.
How the technology works
At the core of the idea is a simple concept—reflection. Reflect Orbital plans to launch satellites into a sun-synchronous polar orbit approximately 600 to 625 kilometres above Earth. This orbit allows satellites to remain in continuous sunlight as they travel along the boundary between day and night, known as the terminator line.
Each satellite would carry a large reflective surface made from lightweight materials such as Mylar. These mirrors, ranging from about 10 to 54 metres in size, would unfold once in space. Using motorised systems, the mirrors could tilt and redirect sunlight toward selected locations on Earth.
The company also envisions a user interface—likely an app or website—through which customers could request illumination for specific coordinates. Once a request is received, a satellite would adjust its mirror to direct sunlight toward that area.
Short bursts of artificial moonlight
Despite the futuristic appeal, the system has clear limitations. Satellites in low Earth orbit move at extremely high speeds, meaning each pass over a location would only allow illumination for about four minutes. The reflected light would cover a circular area roughly 3 to 5 miles (around 5 kilometres) wide.
In terms of brightness, the effect would be modest. The company estimates illumination levels between 0.8 and 2.3 lux—comparable to natural moonlight. In optimal conditions, it could appear slightly brighter than a full moon, but it would not come close to daylight or even typical street lighting.
To provide continuous lighting in one area, a large number of satellites would be required, working in coordination to hand off the reflected beam as they move across the sky.
Potential uses
Reflect Orbital believes the technology could serve several practical purposes. One of the primary applications is in energy production. By extending the hours of sunlight available to solar farms, the system could increase electricity generation without additional ground infrastructure.
The company also suggests benefits for industrial operations and agriculture. Remote worksites could operate longer without installing extensive lighting systems, while farmers might use controlled illumination to influence crop growth cycles.
Emergency response is another area where the technology could prove useful. In disaster zones or search-and-rescue missions, temporary lighting from space could improve visibility without the need for on-ground power sources.
Additionally, the concept could be used for large-scale outdoor events or to illuminate specific public areas, though such uses remain speculative.
Prototype and expansion plans
Reflect Orbital is already planning a prototype satellite, named Earendil-1. This spacecraft is expected to orbit at around 640 kilometres above Earth and will carry a mirror approximately 18 metres wide. If successful, it could illuminate a patch of ground about 4.8 kilometres across with brightness similar to moonlight.
Following the prototype, the company aims to launch additional satellites and gradually scale the system. Its long-term vision is highly ambitious: deploying around 1,000 satellites by 2028, expanding to 5,000 by 2030, and eventually reaching a constellation of 50,000 satellites by 2035.
Investment and pricing model
The startup has already secured significant investor interest, raising over $28 million to date. It has also reportedly received thousands of inquiries from potential customers intrigued by the concept.
In terms of pricing, the company plans to charge around $5,000 per hour (Rs 4.62 aprox) for reflected sunlight from a single satellite. This pricing model suggests the service is aimed at governments, corporations, and specialised use cases rather than individual consumers.
Scientific and environmental concerns
Despite its promise, the idea has raised concerns among scientists and astronomers. One major issue is light pollution. Artificially illuminating the night sky—even at moonlight levels—could interfere with astronomical observations and make it harder to study distant stars and galaxies.
There are also ecological considerations. Many animals rely on natural darkness for navigation, feeding, and reproduction. Introducing artificial light into nighttime environments could disrupt these patterns, particularly for nocturnal species and migratory birds.
Additionally, the sheer number of satellites proposed raises questions about space congestion and orbital debris. Managing tens of thousands of satellites would require careful coordination to avoid collisions and long-term sustainability issues.
A futuristic idea with uncertain prospects
Reflect Orbital’s proposal sits at the intersection of innovation and controversy. While the technology is grounded in real physics and early prototypes are already in development, significant engineering, environmental, and economic challenges remain.
For now, the idea of ordering sunlight on demand remains experimental. Whether it becomes a practical tool for industries and emergency services—or remains a striking example of ambitious space innovation—will depend on how successfully the company can address the many hurdles ahead.
