Creating a Global Overview of Light Pollution

A new initiative aims to combat the growing problem of light pollution, which has already deprived over 60% of the world’s population—and up to 80% in Europe and the US—of a clear view of the night sky. A team of researchers has developed a cost-effective sensor that can be assembled from readily available components for less than $65 USD, allowing anyone with basic technical skills to participate in tracking light pollution. This device, known as FreeDSM, will measure night sky brightness and help differentiate between natural and artificial light, supporting both scientific research and public awareness. The project encourages individuals to build and install these sensors globally, aiming to foster community engagement and ultimately spur changes in how we manage artificial lighting to protect our night skies and preserve ecosystems. For those interested in contributing, detailed instructions are available online.

Creating a Global Overview of Light Pollution

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