The New World Atlas of Artificial Night Sky Brightness

World map of artificial sky brightness: The map shows, in two-fold increasing steps, artificial sky brightness as a ratio to natural sky brightness.

A map for Australia, Indonesia, and New Zealand, similarly showing artificial sky brightness as a ratio to natural sky brightness.

A map of North America’s artificial sky brightness compared to the natural sky.

A map of South America’s artificial sky brightness compared to the natural sky.

Maps of Europe’s artificial sky brightness compared to natural sky brightness.