Orbital Mirror Startup Faces Scientific Alarm Over Night Sky Disruption
- tech360.tv
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Reflect Orbital, a Hawthorne startup, aims to deploy 50,000 orbital mirrors by 2035 to beam sunlight to Earth's night side. The company has raised USD 28 million and filed Federal Communications Commission paperwork for its initial prototype.
Scientists, however, are raising concerns about the potential consequences when technological ambition meets orbital physics and environmental impact.
The company's prototype, EARENDEL-1, is a dorm-fridge-sized device that unfolds into an 18.3-metre mirror. It illuminates a 4.8-kilometre patch with light comparable to a full moon.
Production mirrors, measuring 54.9 metres, are designed to deliver 1/140,000th of midday sunlight across 46.6 square kilometres. Research from Monash University indicates that over 3,000 satellites would be needed to achieve 20% of daytime solar intensity at a single location.
This scale raises questions about the energy returns versus the significant infrastructure investment. Reflect Orbital's pricing is USD 5,000 per hour for its service.
Historical precedents include Russia’s 1993 Znamya-2 experiment, which briefly illuminated Arctic regions using a 24.4-metre mirror. The physics limitations observed in that mission, such as light scattering beyond target areas, persist.
Astronomers warn of the permanent pollution of the night sky with artificial illumination brighter than moonlight. Robert Massey, of the Royal Astronomical Society, described this prospect as "pretty catastrophic" for astronomy.
Fifty thousand mirrors could create streaks across telescope images, potentially ending ground-based astronomy. Wildlife faces disrupted circadian rhythms, affecting migration, breeding, and hibernation cycles.
Pilots also face distraction risks from sudden bright flashes. A regulatory gap exacerbates these concerns, as the Federal Communications Commission reviews radio interference and satellite disposal but not environmental impacts.
No federal agency currently assesses how orbital mirrors might affect ecosystems or night sky preservation. Despite attracting 250,000 service applications and Air Force contracts, Reflect Orbital faces fundamental physics constraints.
Experts suggest that battery storage and grid-scale solutions extend solar power more efficiently than orbital infrastructure requiring constant satellite replacement. While the mirrors might find niche applications in disaster response or Arctic operations, transforming global energy is deemed unfeasible by many scientists.
Reflect Orbital plans to deploy 50,000 orbital mirrors by 2035 to illuminate Earth's night side.
The company has secured USD 28 million in funding and is developing a prototype mirror system.
Scientists express alarm over the potential for light pollution, the disruption of ground-based astronomy, and ecological impacts on wildlife.
Source: YAHOO
