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A call for scientists to halt the spoiling of the night sky with artificial light and satellites

Unfettered access to dark night skies is rapidly diminishing, due to light pollution and satellite constellation tracks. Scientists should do more to stand up to ‘big light’ and ‘big space’ and preserve this natural resource.

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Fig. 1: Comparison between a dark night sky and one affected by ALAN.
Fig. 2: Starlink satellite trails impact the night sky over Carson National Forest, New Mexico.

M. Lewinsky/Creative Commons Attribution 2.0


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We would like to thank P. Marchant and S. Gallozzi for interesting discussions.

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Correspondence to Fabio Falchi.

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F.F. is the President of CieloBuio (an unpaid position); the other authors declare no competing interests.

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Falchi, F., Bará, S., Cinzano, P. et al. A call for scientists to halt the spoiling of the night sky with artificial light and satellites. Nat Astron 7, 237–239 (2023).

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