This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
LichtVerschmutzung. Lichtradien verschiedener Straenbeleuchtungen own Florian Schweidler Tueftli at org de Tueftli Florian Schweidler Original upload log page de LichtVerschmutzung Tueftli bytes no Andere Versionen Light pollution in Germany
Page 2023 Free-images.com. All images are Public Domain