blua:
What the city is missing: Thierry Cohen photographs cityscapes and then photographs deserts at night, combing the two to show us what our cities would look like with the lights off. The stars are not enhanced, they are actual photos from relative latitudes that would expose the same starry sky view if it weren’t for light pollution. Click on each photo to see which city it is.
Light pollution and pollution in general
Light Poles can be seen at nights over large cities with different colored lights. They can only be seen during very cold weather (the temperature of -20 Celsius degrees or lower is required), with minimal wind and plenty of tiny ice crystals in the atmosphere.






