Tag Archives: Night Sky Preservation

This map illustrates artificial night-sky brightness in a portion of the Western Hemisphere, sourced from the US Defense Meteorological Satellite Program. The reddest areas, predominantly in the eastern and western United States, indicate locations where light pollution increases nighttime brightness to nearly ten times that of the natural sky.
1988: The Dilemma of Light Pollution – Losing the Night Sky

Light pollution diminishes the night sky's natural beauty, impacting astronomy and ecosystems. Efforts like the International Dark-Sky Association aim to preserve dark skies and promote efficient lighting