Light pollution is changing our perception of the environment. People spending most of their lives in urban areas will rarely, if ever, see the Milky Way. The name itself is derived from its appearance as a glowing band of light arching across the night sky; a visual display unequaled in grandness and beauty. Until the 1920's, when the electricity grid became more common, it was visible almost everyday, depending on the weather conditions. However, today more city dwellers have seen the Andromeda Galaxy as the wallpaper of their MacBook than they have seen the Milky Way by looking at the sky.
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