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Light Pollution

The stray light cast into the sky by streetlamps, porch lights, neon signs, and other glowing objects that hinders our visibility of the night sky.

Radio Programs

Dark Parks Unfettered views of the night sky November 5, 2012

Blue Night The night sky gets a little bluer November 4, 2012

Crater Sipping from a faint celestial cup April 8, 2011

Featured Images

Nighttime view of the southeastern U.S. from the International Space Station

Blue Night November 5, 2012