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Citizen scientists report global rapid reductions in the visibility of stars from 2011 to 2022 (2023)

Kyba, C. ; Altintas, Y. ; Walker, C. ; [et al.]

In: Science

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Publication Date: 2024-02-09

Description: The artificial glow of the night sky is a form of light pollution; its global change over time is not well known. Developments in lighting technology complicate any measurement because of changes in lighting practice and emission spectra. We investigated the change in global sky brightness from 2011 to 2022 using 51,351 citizen scientist observations of naked-eye stellar visibility. The number of visible stars decreased by an amount that can be explained by an increase in sky brightness of 7 to 10% per year in the human visible band. This increase is faster than emissions changes indicated by satellite observations. We ascribe this difference to spectral changes in light emission and to the average angle of light emissions.

Type: info:eu-repo/semantics/article

Format: application/pdf

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