On a dark stretch of California mountains near Mount Whitney, unexplained lights startled observers until they were traced to a ground rehearsal by Reflect Orbital, a young American company dreaming of mirrors in orbit that would bend sunlight back onto chosen patches of Earth after nightfall. The episode sits at an old human tension: the wish to extend usefulness into every hour meets the claim of those who guard the night's darkness for science and for safety. Astronomers say they were never told, and rescuers remain unconvinced, leaving open the question of who should be consulted before th
US Startup's Space Mirror Test Lights Up California Night Sky, Drawing Astronomer and Rescuer Criticism
An American startup wants to sell sunlight after dark.
On a dark stretch of California mountains near Mount Whitney, unexplained lights startled observers until they were traced to a ground rehearsal by Reflect Orbital, a young American company dreaming of mirrors in orbit that would bend sunlight back onto chosen patches of Earth after nightfall. The episode sits at an old human tension: the wish to extend usefulness into every hour meets the claim of those who guard the night's darkness for science and for safety. Astronomers say they were never told, and rescuers remain unconvinced, leaving open the question of who should be consulted before the sky itself is put to work.
Near Mount Whitney in California, strange lights appeared in the night sky and puzzled those who saw them. They were traced to a ground test by Reflect Orbital, a US startup that hopes one day to place mirrors in orbit and reflect sunlight down to Earth after dark. The company's pitch is "sunlight as a service," and the test was a stand-in rehearsal for the orbital hardware it has in mind.
The reaction came from two directions. Astronomers say they were not told the test would happen, and their work depends on dark skies that any added light can threaten. California rescuers, who often work in mountain terrain like the area around Whitney, said they remain unconvinced by how the test was planned and whether it was safe.
The reporting leaves much unanswered. It does not say what permissions the company obtained, how bright the lights were, or when the test took place, and Reflect Orbital has not publicly responded to the criticism. What is clear is that the question of who gets a say over the night sky is now open, and what regulators do next, and whether the company seeks approval for commercial operations, will shape what comes after.
Near Mount Whitney in California, lights that people could not explain appeared in the night sky. They turned out to be a ground test run by Reflect Orbital, a US startup that wants to reflect sunlight from orbit down to Earth after dark. DarkSky International described the episode as mysterious blinding lights that were later traced to the company's demonstration of its space mirror concept.
The company's pitch, as the headlines frame it, is "sunlight as a service." The idea is to put mirrors in orbit and aim sunlight at chosen spots on the planet once the sun has set. What happened near Whitney was a rehearsal for that idea, a ground-based stand-in for what the orbital hardware is meant to do.
The reaction came from two groups. Astronomers said they were not told about the test. Sky & Telescope reported that the company ran its demonstration without the knowledge of the astronomy community, whose work depends on dark skies and who have long worried about anything that adds light to the night.
The second group was rescuers in California. Phys.org reported that the rehearsal left them unconvinced. The available material does not spell out their specific objections, but the Phys.org headline points to doubts about how the test was planned and whether it was safe. Mountain terrain like the area around Whitney is where search and rescue crews work, and sudden bright lights in the dark are not something they would want to meet without warning.
The Guardian framed the episode as a demonstration of lighting Earth from space that drew criticism. Sky & Telescope put the larger question this way: an American startup wants to sell sunlight after dark, so who gets a say? That question is still open. The material available here does not say what permissions, if any, the company obtained for the test, or how bright the lights were.
The reporting is also thin on specifics. It does not give the date of the test, the number of people who saw it, or any response from Reflect Orbital to the criticism. What is established is that a test took place near Mount Whitney, that astronomers say they were not informed, and that rescuers are not persuaded.
What to watch next is whether regulators respond, and whether Reflect Orbital seeks formal approval to operate a commercial sunlight-on-demand service. How the company answers astronomers and rescuers will likely shape that path.
Citations marquantes
An American startup wants to sell sunlight after dark. Who gets a say?— Sky & Telescope headline
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