![Observational astronomy / Light / Light pollution / Lighting / Light sources / Astronomy / Visibility / Night / Sky / Pollution / Dark-sky movement / Street light Observational astronomy / Light / Light pollution / Lighting / Light sources / Astronomy / Visibility / Night / Sky / Pollution / Dark-sky movement / Street light](https://www.pdfsearch.io/img/bbe9ba0b36480408587635abb3de4a83.jpg) Date: 2008-02-26 05:44:00Observational astronomy Light Light pollution Lighting Light sources Astronomy Visibility Night Sky Pollution Dark-sky movement Street light | | THE IMPORTANCE OF PROTECTING THE NIGHT SKY PERE HORTS Deputy Chairman of Cel Fosc. Catalonia. Spain Fear of the dark is firmly, almost instinctively rooted in human nature. This is logical,Add to Reading ListSource URL: www.starlight2007.netDownload Document from Source Website File Size: 198,43 KBShare Document on Facebook
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