Reflect Orbital's 50,000 Space Mirrors Plan Lights Up California Backlash

US startup Reflect Orbital wants 50,000 mirror-carrying satellites in orbit within a decade, and it has already lit up a California desert to prove the concept. Residents near Lone Pine, in the Sierra Nevada, saw dazzling light pouring down from the mountains earlier this month, illuminating a swath of the desert at night — most had no idea a company was behind it.

The demonstration used large mobile lights erected near Mount Whitney, with the company comparing the radiance to that of a full moon. One local called the lights "blinding." Reflect Orbital says the test simulated one core use case: helping search-and-rescue teams and emergency responders work after dark. The company partnered with a local search-and-rescue team for the exercise.

"Search-and-rescue teams are expected to be our first customers, so this was a real-world test conducted alongside teams who would use our technology," a Reflect Orbital spokesperson said. "We'll keep working closely with local communities and authorities wherever we operate, and are excited to show how this technology can help save lives."

What has the FCC approved?

In July, the Federal Communications Commission approved Reflect Orbital's proposal to launch an initial demonstration satellite next year. It will orbit Earth and use a 59ft-diameter mirror to reflect sunlight in 3-mile-wide beams, at strengths ranging from moonlight up to the brightness of the noon sun. The satellites would operate at roughly 400 miles (645km) above the Earth's surface.

Planned applications go beyond emergencies. The company envisions bathing crops in sunlight at night, replacing broken streetlights and providing solar power for military operations — all summoned by a tap on an app.

Why are scientists and astronomers fighting it?

A coalition of environmentalists and astronomers has attacked both the company and the FCC, warning of a harmful erasure of the boundary between night and day, with consequences for human sleep, wildlife and the ability to see stars.

"This is an idiotic project," said Jan Hasselman, a senior attorney with Earthjustice. "There are a huge number of unresolved questions and significant potential impacts. Literally all of life on Earth evolved based on the rhythm of day and night and there is a ton of data showing that messing with this is not a good idea."

"There needs to be some sort of discussion and analysis before we grant these people the right to fundamentally alter the night sky," he added. "The proposal for 50,000 of these satellite mirrors is crazy and would really end the night sky as we know it."

In August, four groups represented by Earthjustice asked the FCC to reconsider its approval. Their filing cites risks across several fronts:

• Birds, insects and mammals depend on the reliable day-night cycle to feed, shelter and mate; disruption could be disastrous for some species.
• Astronomers say the glare would worsen light pollution and fuel a broader satellite land grab — Elon Musk's SpaceX plans 1 million celestial datacenters around Earth — obscuring stars and creating debris that could fall back as pollution.
• Scrambling night and day could disrupt human circadian rhythms and sleep.
• Looking directly at glaring sunlight at night would harm people's eyes, much like watching a solar eclipse without protection.

Do the climate claims hold up?

Reflect Orbital argues its technology helps the environment: pointing sunlight at solar panels during nighttime hours would boost their energy output and cut reliance on fossil fuels.

Some climate scientists reject that logic outright. David Ho, a climate scientist at the University of Hawaii, frames the company's plan as geoengineering in reverse.

"Global warming is happening because the Earth has a radiative imbalance due to the massive amounts of greenhouse gases we've dumped into the atmosphere," Ho said. "Some people are promoting the already unhinged idea of installing space mirrors facing away from the Earth to reflect the sun's energy in order to decrease global warming. Imagine wanting to turn those mirrors around so that the Earth gets hotter."

Reflect Orbital said it has held "substantive discussions" with scientists and astronomers so its beams avoid astronomical sites, national parks and wildlife-rich areas. "We welcome oversight and want to play a role in shaping it," a spokesperson said. "We believe it is our responsibility to work alongside governments, scientists and regulators rather than ahead of them."

The FCC's reconsideration petition and next year's demonstration launch will decide whether the 50,000-mirror constellation stays a business plan or becomes the night sky's new landlord.