![lt= Las Vegas sky glow from 70 miles away as seen in this false color photo from Mojave National Preserve, California.](/subjects/nightskies/images/LasVegasSmall.jpg?maxwidth=650&autorotate=false)
NPS
![lt= Simulation of light pollution growth in the United States: 1950s, 1970s, 1990s, and projected to 2025. Graphic by Cinzano, P., Falchi, F. (University of Padova), Elvidge, C. D. (NOAA National Geophysical Data Center, Boulder). Copyright Royal Astronomical](/subjects/nightskies/images/lightPollutionGrowthLarge.jpg?maxwidth=650&autorotate=false)
Credit: P. Cinzano, F. Falchi, C. D. Elvidge. Copyright 2001 ISTIL, Thiene. Reproduced from ISTIL Report 2001. Rapporto ISTIL 2001- Stato del cielo notturno e inquinamento luminoso in Italia; ISBN 88-88517-00-6
References
Cinzano, P., Elvidge C. 2003. Night sky brightness at sites from satellite data. Mem. Soc. Astron. It., 74, 456-457.
Unpublished NPS measurements based on 2002-2008 data.
Cinzano P. 2000. Measuring and Modeling Light Pollution. Mem. Soc. Astron. Ita., 71:1, 159-166.
Falchi F. 2011. Campaign of Sky Brightness and Extinction Measurements Using a Portable CCD Camera. Monthly Notices of the Royal Astronomical Society, Vol 412:1.
Unpublished NPS measurements based on 2002-2012 data.
For information on a 2016 study that shows the extent of light pollution across the night sky, read this press release.
Last updated: December 12, 2017