Good morning.

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Astronomers have preached the virtues of dark skies for years.

Modern cities, they say, use way more artificial light in the evenings than necessary, much of it emanating into the sky where it does no good.

So-called light pollution erases our view of stars and, to a degree, the wonder they bring at our place in the cosmos.

It’s estimated that a third of the world’s population can’t see the Milky Way.

So how bad is the light pollution in California?