Sunlight on Demand: Startup Reflect Orbital Plans $5,000-Per-Hour Space Mirrors

Reflect Orbital wants to sell you an hour of sunlight for $5,000 — beamed from space. The startup's plan calls for 50,000 satellites equipped with giant mirrors, redirecting sunlight down to Earth on demand in rays five kilometers wide, with brightness ranging from "noon light to moon light."

That's the pitch. And according to astronomers, it's a catastrophe in the making. Princeton University astrophysicist Gaspar Bakos, who co-authored a report on the company's plans, put it bluntly: "This is not a 'concern'—this is like a bullet in your head. It's the end of ground-based astronomy."

What is Reflect actually selling?

Reflect markets the product as "sunlight-as-a-service." The company's website pitches use cases like powering solar panels at night, illuminating disaster zones, supporting search-and-rescue missions, and lighting up worksites, cities, and events.

The pricing tells a different story about who the customers will be. At $5,000 per hour of light, the service is prohibitively expensive for almost everyone — leaving critics to conclude that only militaries and titans of industry are realistic buyers, despite the company's altruistic branding.

So far, the company hasn't launched a single satellite. In August, it received approval from the Federal Communications Commission to launch one demonstration satellite — a decision that angered environmental groups, which urged the FCC to reverse it.

The regulatory landscape is about to get thinner, though. Reflect recently purchased two launches from Skyroot, based in India. Under the Outer Space Treaty, India will be liable for any unintended consequences of satellites launched from within its borders. Going forward, Reflect won't need U.S. government approval at all.

What does this change for astronomy?

The night sky is already crowded, thanks to constellations like SpaceX's fleet of Starlink satellites. Astronomers and environmentalists say Reflect's plan would make things dramatically worse.

Bakos told Sky & Telescope that the sunlight-on-demand concept is "essentially ignoring all the progress we have made for the past many decades in bringing awareness to and decreasing light pollution."

The numbers back him up. According to the report by Bakos and his colleagues, each Reflect satellite would appear in the sky as a point source four magnitudes brighter than the moon. The beams would cast light for up to 30 kilometers from their targets, causing diffusion across the night sky that would make it extremely difficult for ground-based telescopes to observe objects in space.

There's a safety risk too. Amateur astronomers could suffer permanent eye damage if they happened to catch one of Reflect's beams through a telescope with an aperture greater than 12 inches.

The environmental concerns extend beyond telescopes. Artificial lighting at night threatens plants and animals that depend on the day-night cycle for biological regulation — and humans, whose circadian rhythms govern sleep, hormones, and digestion.

What does the CEO say?

Reflect CEO Ben Nowack, speaking to Payload, said the company will work around astronomers' needs. "If there's an astronomer or a place that doesn't want to see light, and they have a really hard brightness requirement … we will make sure that we don't serve customers close[by]," Nowack said.

As for concerns about life on Earth, he dismissed them as familiar technophobia. "Similar concerns and fears were brought up when light bulbs were introduced to the world, and people were worried about circadian rhythm and like, is this godly?" he said.

The comparison strains credulity, given that Reflect's beams would be somewhat brighter than light bulbs — and would arrive from a constellation of 50,000 satellites, each outshining the moon by four magnitudes.

The company's next concrete milestone is the demonstration launch, followed by its two Skyroot missions from India. Whether the FCC's single-satellite approval becomes a full constellation may depend less on U.S. regulators than on how the international liability rules of the Outer Space Treaty play out in practice.