Sunlight at night: US startup’s demonstration of lighting Earth from space draws critcism
Summary
Reflect Orbital, a U.S. startup, demonstrated powerful nighttime lighting near Lone Pine, California, using mobile lights to simulate sunlight reflected from a satellite mirror. The plan has drawn criticism from environmentalists and astronomers, who warn that artificial nighttime light could harm wildlife, disrupt sleep and worsen light pollution.Key Facts
- The California demonstration took place near Mount Whitney and was conducted with a local search-and-rescue team.
- Reflect Orbital says search-and-rescue teams could be its first customers.
- The Federal Communications Commission approved a proposal in July for an initial demonstration satellite to launch next year.
- The proposed satellite would use a 59-foot-wide mirror to reflect light in beams about three miles wide.
- Reflect Orbital has said it aims to launch 50,000 mirror-equipped satellites over the next decade.
- The company has proposed uses including emergency response, crop lighting, replacing broken streetlights and supporting military solar power.
- In August, four groups represented by Earthjustice asked the FCC to reconsider its approval, citing potential effects on wildlife and the night sky.
- Astronomers warn that reflected light could worsen light pollution and interfere with observing the stars.
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