Astronomers, billboard companies clash over signs that shine

PHOENIX (AP) — Arizona has long been a haven for astronomers who take advantage of its mountain peaks and vast stretches of dark, desert sky to gaze at stars and planets. The state is also home to a thriving billboard industry whose signs light up a vast network of freeways.
The two industries have long clashed, and they are in the midst of another fight in the Arizona Legislature.
A bill would allow electronic billboards to shine in two counties in the western part of the state, where the