Bizarre “light pillars” project glowing map of Finnish city into the night sky
They call them "sun pillars", vertical shafts of light extending upwards from the setting Sun into the sky. A type of halo effect, they form when sunlight reflects off the surface of falling ice crystals and thus, are more common in cold, snowy northern latitudes than other parts of the world. Occasionally the optical phenomenon can also be produced from other sources of light, including street lights. Such was the case in Finland last week when light pillars rose into the air projecting a perfect map of the city's streets into the dark, night sky. On January 12, 2016, residents of Kauttua, Finland were treated to an unusual pattern of beautiful, bright, glowing lines in the sky. Many took pictures and posted them on the Internet. It wasn’t