Auroras come in a wide variety of colors — from green to pink to blue and purple — that can leave ... The process is similar to how neon lights work: When the molecules and atoms get "excited ...

On social media, people as far south as Washington, D.C., and Kentucky reported seeing the lights, which in pictures seemed to vary in color and intensity from neon pink to a subtle hazy purple.

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Not all science is carried out by folks in white lab coats under the fluorescent lights of academic buildings ... auroras and is characterized by a purple-pink arch accompanied by green, vertical ...

He said the spread of purple street lights reminds him of when Citgo Petroleum Corp. replaced the neon tubes on its famous Kenmore Square sign with LEDs in 2004. In Waller’s view, it messed with ...