set up a star park in the bavarian alps a protected dark zone where you can still view the firmament it's a sight most of humanity rarely seems. a bit harsh on it's once only twenty to thirty percent of us still see the night sky as it really is a sleepy other seventy to eighty percent of us can't see it like this anymore simply because of the vast increase in artificial light it's been increasingly swamping the night sky for the last ten to twenty years at least of course lists i think. primeval rhythms of light and darkness have been suspended in major cities the worlds biggest urban centers are now forty times brighter than the night sky. the seventeenth century invention of street lighting lights up the entire planet. and nights are growing over two percent brighter every year. artificial light is