The Stechlinsee in the German region of Brandenburg, is one of the darkest places in Europe. It is there that researchers are investigating how light pollution is interfering with entire ecosystems...
By Esther Göbel
Light takes around 8 minutes and 20 seconds to travel from the sun to earth. It takes this long because the Earth is approximately 149.6 million kilometres from the sun. Even at light speed (almost 300,000 kilometres per second), this distance cannot be covered any quicker.
Colour temperature is a measure for quantifying the colour impression of a light source.