Astronomers have rallied strong support for keeping the skies dark in
sky- watching has a long tradition, and Tucson, a world-famous space science community. Local governments in Coconino and
Pima counties have upheld lighting ordinances that protect the
night skies by using lights sparingly and shielding them so they point
down at the things they're meant to illuminate.
To address statewide light pollution issues, State Sen. Gabrielle Giffords, D-Tucson, has sponsored astronomy-friendly legislation, including the "good-lighting bill" that the governor signed into law in 2003. And she helped defeat legislation last spring that would've allowed for bright, blinking billboards along the state's highways. But she says she's fighting a hard battle with her colleagues from Phoenix.
More: Arizona Daily Star - Tucson, Flagstaff help astronomy; Phoenix is another matter by Anne Minard
Link: International Dark Skies Association