Sacramento is one of California’s most light polluted cities. The Bortle scale is a nine-level numeric scale measuring the night sky's brightness of specific locations with one being perfect ...

Michael Steven Harris earned People's Choice at the British Photography Awards for this stacked, long-exposure image ...

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Viewing the space spectacle could well be a challenging task thanks to increasing light pollution over the city. While most ...

Artificial light is growing across the planet faster than almost any other human influence. Once limited to towns and highways, that glow now touches roughly one quarter of all land ecosystems.