How light pollution affects the dark night skies

This image illustrates the Bortle scale, which measures the impact of light pollution on the dark skies at a given location. It shows, from left to right, the increase in the number of stars and night-sky objects visible in excellent dark sky conditions compared with cities. 

The illustration is a modification of an original photograph taken at ESO's Paranal Observatory in Chile, a place with excellent dark-sky conditions, perfect for astronomy.


ESO/P. Horálek, M. Wallner

About the Image

Release date:29 June 2022, 08:52
Size:8000 x 4500 px

About the Object

Name:light pollution
Type:Unspecified : Sky Phenomenon : Night Sky

Image Formats

Large JPEG
7.1 MB
Screensize JPEG
190.3 KB