Here come more stars to character the skies,
And they in the estimation of the wise
Are more divine than any bulb or arc,
Because their purpose is to flash and spark,
But not to take away the precious dark.
We need the interruption of the night
To ease attention off when overtight,
To break our logic in too long a flight,
And ask us if our premises are right."
The Literate Farmer and the Planet Venus
Robert Frost (1874-1963)
ArcGIS Artificial Sky 3d
Blue Marble Navigator
IAU Centre for the Protection of the Dark and Quiet Sky from Satellite Constellation Interference (CPS)
Dark Site Finder
David Lorenz Light Pollution Map
Parshield PAR-38 & Spotlight Retrofit Shields
Sky Quality Meter
Starry Night Lights
What's that light cost you?
World Light Pollution Map