|Composite map of the world assembled from data acquired by the Suomi NPP satellite in April and October 2012. Credit: NASA Earth Observatory/NOAA NGDC|
Here is the Internation Dark-Sky Association's tips of minimizing light pollution: "To minimize the harmful effects of light pollution, lighting should:
- Only be on when needed
- Only light the area that needs it
- Be no brighter than necessary
- Minimize blue light emissions
- Be fully shielded (pointing downward)."