Due to light pollution, the number of stars visible to the naked eye in the night sky is being reduced by more than half in some places in less than 20 years,
Light pollution is obstructing those stars and is expanding far more quickly than scientists had realised.
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Light pollution threatens to darken the night sky in 20 years
Light pollution rapidly reducing number of stars visible to naked
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Light pollution is getting worse, and Earth is paying the price
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Visibility of stars in the night sky declines faster than previously thought