The technology
A steerable satellite mirror reflects sunlight toward a selected area.
A company has approval to test a satellite carrying a large mirror that can redirect sunlight toward Earth after sunset.
No private company should be able to alter the shared night sky before independent assessments and democratic rules are in place.
The issue is not one isolated experiment.
A steerable satellite mirror reflects sunlight toward a selected area.
Customers could purchase artificial illumination from orbit.
A demonstration can open the way to larger fleets before rules exist.
The natural night is essential for science, ecosystems and human well-being.

Artificial light can interfere with observations.
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Light at night can disturb wildlife behaviour.
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Night-time light can disrupt sleep and circadian rhythms.
Learn more →A demonstration mirror is planned at roughly the scale of a tennis court.
Project materials describe a bright illuminated spot extending several kilometres.
The company has discussed a future constellation numbering in the thousands.
The night sky is a shared natural environment.
Sign the petition, share the evidence and ask decision-makers to protect the natural night.
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