images

Light pollution

by

J.Lodriguss/Novapix

Reference

t-met98-00002

Date

2007-01-29

Photogtaphic exposure of the starry sky in Arizona.The green halo, mostly from mercury vapor lights, on the eastern horizon is from Prescott. The yellow halo is predominately from sodium vapor lights exacerbated by low clouds over Phoenix, about 75 miles away.